Sort By: View 12 / 24 / All 888864 Air Bag, Replaces Peterbilt & KW Low Air Leaf 03-08716 & C81-1011, Includes Bottom Stud Part# 280-8864WS Free Shipping dbennett48 Old Fart Joined Nov 12, 2009 890 Posts Meanwhile, to keep the Flex air suspension running for an extended period, always check the airline, airbag, and air springs for any leaks. Lighting. 2 pack of TORQUE Front Axle Air Spring Bag for PACCAR (Replaces Firestone 9933, Firestone W02-358-9933, Peterbilt B81-6023) (2 x TR9933) . Whenever you are working on an air suspension, you must deal with the suspension manufacturer not HWH CORPORATION. How does the Peterbilt Flex Air Suspension Work? For the best experience on our site, be sure to turn on Javascript in your browser. The other is up behind the spare tire. Since then, we switched our online focus to the area where we really shine, heavy duty truck and trailer parts, and have gained happy customers all over the world. Prestige - Sterling Gray. To do this easily, make sure that the truck is parked on a flat surface. OEM Number Remarks; . The Des Moines Location has over 15 acres of salvage unit parts storage, a used truck sales office, and has access to over 250 used trucks in the Vander Haag's used truck inventory. Create Estimate. General Freight, Car carrier, tanker, lumber, auto hauler, Heavy equipment, asphalt, logger, agricultural products, General Freight, heavy equipment, snow plow, 6.50 inches (Single Drive) and 8.50 inches (Tandem Drive), Car carrier, general freight, dump, refrigerated products, General freight, city delivery, lumber, auto vehicle, emergency vehicle. 6-11 Months EnterpriseNli Sales, Inc. Jasper JASPER AL. 5. Part Info (800)599-9551 . I Need CDL Training Vander Haag's website offers an easy-to-find parts search with online check-out. Enter Original Manufacturers or Aftermarket Leaf Spring Number in the Search Bar on Top of the Page to find the springs for your truck! 2003 PETERBILT . HAD EATON DSP40 & RSP40 REAR ENDS. However, these problems, when not resolved, may cause severe damage to the entire suspension. The biggest maintenance concern is the bonded bushings; the spring eye opens up and the bushing can walk out. We also offer special heavy duty aftermarket springs for applications were more spring capacity is required over OEM springs. This Item Normally Ships in 10-20 Business Days, This Item Normally Ships in 5-10 Business Days. Details Typically ships in 7 to 10 business days. Advanced Aero Mirrors. With our growing customer base in the Texas market, getting our parts closer to the customer cuts down on unnecessary downtime and allows them to get back on the road quickly, Quality Inspected Used/Rebuilt Transmissions. Rubber Flares. Under-Fairing Skirts. Our Spencer location has over forty acres of part and vehicle storage with over 100,000 sq. SOURCE: Air Suspension plomlem. It has online access to all inventory at Vander Haag's and has online parts and used truck locating services. Peterbilt Frame & Chassis Front Axle Air Ride Kit W/ Shock Brackets Fits Square U-Bolts Front Axle Air Ride Kit W/ Shock Brackets Fits Square U-Bolts Email a Friend Add to Favorites View Larger SKU 29-05K0900 Warranty 1 Year (3 reviews) Read Reviews $1,067.99 KIT QTY: Add to Cart As low as $49.28/mo* California Proposition 65 Disclaimer Description I know this is a 93' year model with air leaf suspension and isn't going to ride as smooth as the newer style suspension but it seems like it should ride a little smoother. Instagram:https://www.instagram.com/peterbiltmikec/Facebook:https://www.facebook.com/PeterbiltMikeCTikTok:https://www.tiktok.com/@peterbiltmikec?Linkedin:https://ca.linkedin.com/in/mike-chamberlain-58361142Peterbilt Mikemchamberlain@peterbilt.bc.ca778-349-2215Peterbilt Pacific Inc.6333 Pacific St.Prince George, BCV2N 5S3https://www.bensound.com/royalty-free-musicre information check out our website at: www.peterbiltpacific.com By checking this box and clicking the "Send me job offers" button below, I represent that I: By checking this box and clicking the "Send me job offers" button below. 888864 Air Bag, Replaces Peterbilt & KW Low Air Leaf 03-08716 & C81-1011, Includes Bottom Stud, Meritor M85069 AllFit Shock Absorber, Peterbilt Low Air Leaf & Kenworth AG400L, Hendrickson Height Control Valve with Integral Dump Valve, Use Only On Trucks, SRK168 Linkage Kit for Suspension Leveling Valves, TMR553 Peterbilt/Kenworth Torque Rod, Rubber Bushings, 25-9/16" C to C, PTP RB-268 Anti-Walk Straddle Bushing, 5.672" C to C, PTP MPB7546PTP Peterbilt Air Spring Stud, Replaces Peterbilt 27-01746 & 2701746, Atro PB46-26268 Pivot Bushing, Anti-Walk, High Confinement, 75-173 LH Z-Spring, Front of Rear, Peterbilt/KW AG210, 75-175 RH Z-Spring, Front of Rear, Peterbilt/KW AG210/400L. The efficiency of a vehicle can be determined by its ride height. Sign up to receive all the latest product news. The air supply is engine air compressor, the air tanks, air valves, and air lines. Front: 1: 03-02555 : 28: 338-779: Track Rod Frame Bracket, Straddlemount . There is an extra shim underneath the leaf springs on the driver side that is not there on the passenger side. Prestige - Sterling Gray. It's the same as the Kenworth Air Glide 210L (AG210) and 400L (AG400L). 2. check to make sure the relay is good (black little box under the right front bumper. Bookmark +. Air suspension with maximum capacity of 40,000 pounds. Part Info. AIRTEK Integrated Front Air Suspension and Steer Axle System Save up to 97 pounds with AIRTEK. LOW MOUNT AIR LEAF SINGLE/TANDEM AXLE REAR AIR. can supply complete package including leaf springs, U-bolts, and spring The Peterbilt Flex air suspension has a ride height of 8.50 inches. What suspension ? All trucks are inventoried inside to improve the quality and condition of our parts. ft. of storage and service facilities with over 30 acres of salvage units and parts storage. It is just enough to allow the wheels to absorb road shocks. Unfortunately, not all semi trucks have air suspension as there are many types of suspension a vehicle can use. If there are particular cracks or minimal damage, replace such components. Tell us in the Shopping Cart "Special instructions for seller" if the delivery is to a residence or a commercial site without a loading dock where a lift-gate delivery is needed. Situated just northeast of I-465 and I-70 in West Indianapolis, we are stocked with a large inventory of Used, Rebuilt, and New truck parts. Without your consent employers will not be able to contact with job offers, would you like to opt-in now? SKU TMR518F $121.32 Springs 12 Kenworth Air Glide 130 Peterbilt Air Leaf Springs Another Part 13 Unavailable Hair Pin Clip Sorry, there are no products matching your search. Peterbilt - Low Mount "Air Leaf" Single/Tandem Axle Rear Air . Click to expand. Bookmarked content can then be accessed anytime on all of your logged in devices! Peterbilt - Conventional/Cab Over Front Suspension (4" Wide Springs) Key: Part Number: Description: No. Req: OEM Reference: Remarks: 1: 338 . VIN #: 1XP5DB9XX2D574427. We are excited to anounce our new location located in London Ohio right off of I70 (exit 79). We are adding more products daily. The 367 is as tough as it is versatile and specifically designed to endure heavy-duty vocational applications. It is also known as ground clearance. We offer quality used, rebuilt, and new truck parts to save you time and money. ANY QUESTIONS, PLEASE USE OUR [Leaf Spring Request Form], 75-170HD Heavy Duty Peterbilt Leaf Spring Assembly (Made in the USA), 75-178HD Heavy Duty Peterbilt Leaf Spring Assembly (Made in the USA), 75-202HD Heavy Duty Peterbilt Leaf Spring Assembly (Made in the USA), 75-105 301663 Peterbilt Multi-Leaf Spring, 75-107 301992 Peterbilt Multi-Leaf Spring, 75-108 200490 Peterbilt Multi-Leaf Spring, 75-109 302158 Peterbilt Multi-Leaf Spring, 75-110 200171 Peterbilt Multi-Leaf Spring, 75-111 302160 Peterbilt Multi-Leaf Spring, 75-114 200277 Peterbilt Multi-Leaf Spring, 75-117 302729 Peterbilt Multi-Leaf Spring, 75-119 300751 Peterbilt Multi-Leaf Spring, 75-120 200664 Peterbilt Multi-Leaf Spring, 75-122 200519 Peterbilt Multi-Leaf Spring, 75-123 300725 Peterbilt Multi-Leaf Spring. QUADRAFLEX 4 SPRING TANDEM REAR. If you want to know everything about Petes flex air suspension, read on to learn more. Peterbilt LX Driver. It has online access to all inventory at Vander Haag's and online parts and used truck locating services. 75-178HD Heavy Duty Peterbilt Leaf Spring Assembly (Made in the USA) $1,035.74. Dirks1206 - Peterbilt Front Suspension 3-1/2 Wide Leaf Spring, 5 Center to Center, 1-1/4 OD, 5-39/64 Long Spring Pin Shock Absorber Fits Peterbilt * High Quality Shock Absorber * Gabriel Fleetline Shock * Fits Peterbilt Air Trac Suspensions * Fits Peterbilt Air Leaf Suspensions * 1.625 Inches Bore * 9.160 Inches stroke * 14.79 Inches Collapsed Length * 23.95 Inches Extended Length * Mounting Upper S21 Stud Type * Mounting Lower EB3 Eye Type * Sold Individually * Warranty On Shocks Against Defects In . Besides routine inspections, its also best to keep the service schedule to a professional mechanic. In 2020, we will be moving our reman division to a larger 8000 sq. Our team is ready to assist you! However, Flex air will still work better because higher ride height is difficult to maneuver and can be dangerous to handle at times. Problem Areas. Provides up to 10in of lift. 389. Thank you for shopping with us and remember to ask Pete if you don't see the part you're looking for. Vander Haag's website offers an easy-to-find parts search with online check-out. Part Info (205)221-5203 Request Info. The suspension offers low chassis height and improved tank applications. OVERVIEW. Additional Peterbilt Front Air Leaf Suspension features include: Lightweight components for in a reduction of 26 pounds compared to taper leaf suspensions; Ride height compatible with Low. Peterbilt Low Mount AirLeaf Rear Air Suspension69 Peterbilt front suspension298 Peterbilt AirTrac Rear Air Suspension72 Peterbilt AirLeaf Rear Air Suspension75 Neway Single Point Trailer Schematic78 Neway RTS Trailer Schematic81 Mack front DM, MR, R suspension292 Mack front DM, MR, R suspension292 Rear Spring Bushing Mount Fits Peterbilt Air Leaf Suspension $54 99 Rear Spring Bushing Mount Fits Peterbilt Low Air Leaf Suspension $64 99 Atro PB75-29674 Complete Air Leaf Suspension Bushing Kit Peterbilt 03AL1 $377 13 Automotive Replacement Parts Shocks, Struts & Suspension Leaf Springs & Parts Leaf Springs Currently unavailable. Peterbilt Torque Rod for low mount Air Leaf. You may also hear clunking, whining, grinding sounds from the component. and coming factory with full locking rears. Every month 400 people find a job with the help of TruckersReport. Chassis Fairings (Mold-in-Color or Painted) Under Cab Closeouts. Peterbilt Air Glide 210 Low Air Leaf "Twisted Sister" Drive Axle Suspension Parts This suspension hit the streets in 2003. The Peterbilt trucks with Flex air suspension are 379, 387, 385, and 378. Peterbilt Air Suspension Ride Heights 14-96R This bulletin is applicable to all vehicles equipped with proprietary rear air suspensions. Please select the number of verifiable months youve been driving professionally using your Class A CDL within the last 3 years. Peterbilt 10 Hole Hub Pilot ABS Brakes. The Peterbilt Flex air suspension has a ride height of 8.50 inches. Powered by the PACCAR MX-13, the engine provides customers with maximum power and . . These instances are indications of air spring leaks brought by deterioration. Some common air suspension problems include: A leak is common to air springs because this is the effect of the usual wear and tear. . Springs, Steering, and Suspension Specialists . Peterbilt flex air suspension directly works with coil and leaf springs. Check to make sure that your tires are inflated equally and that you axle cross locks are fully disengaging. For more heavy-duty service tips and insight, click here to visit our service-focused sister site, Fleet Service Technology. Can anybody tell me why? But its noteworthy to consider that this suspension system is one of the earliest suspensions of Peterbilt and many technology and features came later in the trucking industry. When you have already parked the vehicle, loosen the hose clamp and find the rod down where you can increase and decrease the height of the air suspension. Peterbilt Motors Co. has begun production of its proprietary Front Air Leaf Suspension, now available for its Model 384, 386, 388 and 389 trucks. Job Listing Rules. The website also offers a used truck locating service to help you find a truck that fits your needs and budget. This suspension hit the streets in 2003. See Stengel Bros. Springs and Suspension Reviews at Bizrate.com, Air Glide 130 (Peterbilt Front Air Leaf) Front Air Suspension, Kenworth - Air Glide 130 (Peterbilt I have a 2014 peterbilt 389 with factory front air leaf suspension, just wondering what the ride height should be and - Answered by a verified Technician. Pressurize the air system with a constant supply of air in excess of 70 PSI (4.8 bars), and check that all air springs properly inflate and raise the suspension to the proper ride height. ft. facility. JavaScript seems to be disabled in your browser. How do I change the Height on my Peterbilt Flex Air? The secure and easy all-access connection to your content. 5+ Years, Please select ALL of your current, valid drivers licenses. However, brands like Peterbilt are equipped with Flex air suspension. The Spencer location is also where the Vander Haag's Corporate Headquarters are. Fortunately, you can prevent these problems from happening through early detection. Peterbilt Front Air Leaf. It could be a bumpy ride, the air compressor keeps running, or the ride height will drop. It offers frame modifications and alterations, equipment installation, and a complete repair facility. USED 2002 PETERBILT 379 CUTOFF LOW AIR LEAF. Our Des Moines location is home to the largest VanderHaag's showroom, and has a storage and shop area over 20,000 sq feet. In CDL School Now 1-5 Months We've been in the heavy duty truck and trailer parts business for decades, and started selling light truck accessories online in 2000. Lane Departure Warning. Low air suspension refers to the fifth wheel height from the ground. 2 Years We ship nationwide! Suspension, Bushing; 1 3/4"OD x 6 11/16''Lg x 5 7/16" c/c, Side Bar; 6 5/16"Lg x 4" c/c x 1 1/4"Thk, 1 1/16" Pin Holes, Kit, U-Bolt; Square Bend; 3/4" x 4" x 7"Lg, 3 5/8"-19 5/8" Range; Use w/All Height Control Valves. According to the OEM, the front. Shop our large inventory of New/Used Peterbilt LOW AIR LEAF Suspensions for sale online. If this is the case, its time to replace the air spring. REMANUFACTURED TANDEM CUTOFF WITH PETERBILT LOW AIR LEAF SUSPENSION, RD20145 MERITOR DIFFERENTIALS, RATIO:3.42, ABS SENSORS AND PILOT METRIC HUBS, 2011 TRUCK, COMPLETE, INSPECTED READY TO. If necessary, adjust the size to maintain good function. The component weighs 38,000 lbs. Rear rear. Features. As such, these models with flex air suspension cannot be sourced directly from Peterbilt anymore. With a unique design that provides increased stability, improved ride and comfort, and reduced maintenance, AIRTEK is the industry's first front air suspension and steer axle system. Terms | ETP-8713. Other components may not have a huge function in the air suspension, but they are vital for the entire suspension to work. A comprehensive look at Peterbilt's 13,200 lbs air ride front springs on a Peterbilt 389 tractor.feel free to follow along on Instagram, Facebook, Linkden and TikTok @Peterbilt Mike C follow my social feeds below. 3. there are two (that I know of) switches/sensors. The engine air compressor supplies air for every piece of air equipment on the vehicle. (833) 734-___ SHOW NUMBER Email Seller 7 0 2017 Eaton-Spicer Cutoff for a Peterbilt 365 $9,000 USD CDL Grad, No Experience With a bonded OE-style rubber bushing, the pin . 2012 Peterbilt Low Air Leaf Suspension USED - Suspension only, Does not include housings Item:25323478 Sioux Falls, SD $1376.00 Add To Cart 2005-2024 Peterbilt Low Air Leaf Suspension - Used USED - Suspension only, Does not include housings Item:25318908 Council Bluffs, IA $2200.00 Add To Cart 2005-2024 Kenworth AG400L Suspension - Used 2006 pete 379 pete low air leaf suspension, abs, 54" spread, 40000 lbs We've been in the heavy duty truck and trailer parts business for decades, and started selling light truck accessories online in 2000. However, should you want to buy a truck with Flex air suspension, you can purchase the models mentioned above from authorized sellers of used or second-hand vehicles. Options include a variety of front and rear suspension choices including Peterbilt's Front Air Leaf Suspension. Peterbilt - Low Mount Air Leaf Single/Tandem Rear Air Suspension. See Stengel Bros. Springs and Suspension Reviews at Bizrate.com. Come check out our completely remodeled 4000+ square feet parts showroom and sales counter area! Improves ride. 2023 Heavy Duty Trucking, Bobit. Some items will not apply to this great shipping policy, and will be clearly marked. Peterbilt Flex Air Suspension Ride Height. You can purchase at Peterbilt trucks with Air Trac, Air Leaf, and Low Air Leaf as these are suspension systems used by newer Peterbilt models. Dirks1348 - Peterbilt Air Leaf Suspension Rear Shock Absorber With Stud Upper Mount $ 86.00 Add to cart; Dirks1224 - Peterbilt Rear Suspension Top Plate . Does the Peterbilt Flex Air Suspension need Maintenance? 1996 PETERBILT LOW AIR LEAF Cutoff Assembly (Housings & Suspension Only) Diff Model: DS404, 3.55 ratio REAR ONLY. We offer truck, trailer, and equipment sales, as well as new, rebuilt and used truck parts. Peterbilt has recommended a particular schedule for inspection and maintenance. Peterbilt Flex Air system is an older air suspension system of the brand. 21K (Single)/40K (Tandem), Aluminum Spring Hanger, 21K (Single)/40K (Tandem), Cast Iron Spring Hanger, USED - Suspension only, Does not include housings, USED - Suspension only, Does not include housings; each sold seperately. It has a mechanical & body shop of over 21,000 square feet, complete equipment and parts installation facilities, complete body & frame repair, and a used truck sales office. Buy. Peterbilt flex air suspension was introduced in the early 2000s. Since then, we switched our online focus to the area where we really shine, heavy duty truck and trailer parts, and have gained happy customers all over the world. Peterbilt LX Driver. Fewer parts, higher weight rating (40k), and improved ground clearance. Type. VIN #: 1XP5DB8XXTN422483. The tests found that ride quality in the front of the trailer depended on the tractor suspension. Moisture is inevitable. Besides the Flex air suspension, Peterbilt vehicles are also equipped with other suspension systems: Air Leaf, Air Trac, Low Air leaf, and Low Low Air leaf. Peterbilt 389 Air Ride Kit Add to favorites SKU: AR-GEN3-389 Info: UPGRADING YOUR TRUCK TO A 12 GAUGE AIR RIDE PROVIDES UP TO 10IN OF LIFT, IMPROVES RIDE, UPGRADES TO 4 SHOCK SYSTEM, AND TOGGLE SWITCH CONTROL. Besides the Flex air suspension, Peterbilt vehicles are also equipped with other suspension systems: Air Leaf, Air Trac, Low Air leaf, and Low Low Air leaf.HeightWeightCommodity HauledIntended ServiceFlex Air8.50 inches38,000 lbsAll except hay and asphaltGeneral Freight, Car carrier, tanker, lumber, auto haulerAir Trac11.70 inches20,000 lbs to 46,000 lbsAllHeavy equipment, asphalt, logger, agricultural productsAir Leaf11 inches38,000 lbsAll except hay and asphaltGeneral Freight, heavy equipment, snow plowLow Air Leaf (Built prior April 2004)8.50 inches40,000 lbsAll except hay and asphaltDump, wrecker, lube, blockLow Air Leaf (Built after April 2004)6.50 inches (Single Drive) and 8.50 inches (Tandem Drive)38,000 lbsAll except hay and asphaltCar carrier, general freight, dump, refrigerated productsLow Low Air Leaf8.50 inches20, 000 lbsAll except hay and asphaltGeneral freight, city delivery, lumber, auto vehicle, emergency vehicle. Shop online, stop in, or call the Vander Haag's team today! For every 10,000 miles or 16,000 km. After all, the purpose of air suspension is to provide a consistent ride quality, especially on off-road and other poor road conditions. When driving a loaded truck, make sure that the ride height is at least 2.50 inches. The air spring installed is monitored by the truck for ride height and internal air pressure. In 1998, we added a Truck & Trailer Sales lot located off Cliff Avenue that is now home to over 200 used trucks, trailers and equipment. As you might have known, ride height is the gap between the ground and the lowest component of a vehicle, typically the axle. For convenience we can ship parts directly to you, or you can pick up at one of our 9 locations across the Midwest. Comments are moderated and may not appear for 24 hours or more. Unfortunately, these trucks have been phased out, or the brand is no longer manufacturing them nowadays. Its also important to measure the pinion angle or ride height at this time. 4 Years Add to Cart. although i just cant convince myself that its truly a converted truck with the factory all leaf (no air-ride) suspension. So when this problem occurs, the issue is the air dryer and not the compressed air. Shawn Warman discusses how to check the Ride Height Adjustment & Suspensions on your Peterbilt truck.Visit Peterbilt Atlantic anytime at: http://www.peterbil. PX-7. Height adjustment is crucial to prevent damage to the Flex air suspension. SEARCH INVENTORY. We have pins, U-bolts, shackle kits, shocks, hangers, bolts and bushings. Peterbilt Parts offers free shipping on orders that surpass $99. One way to identify if the air compressor is faulty is the sudden change of the ride height. No shim under leaf springs. The flex air suspension is a tandem suspension composed of air and leaf springs. Kenworth Air Glide 130 (Peterbilt Air Leaf) Front Air Suspension, Kenworth Air Glide 130 Peterbilt Air Leaf Springs, Bushing 1 3/4" OD x 6 11/16'' L x 5 7/16" C-C, Bushing 1 3/4" OD x 7 1/2" L x 6 5/16" C-C, T Series 2004+, 59" L Springs, Side Bar 6 5/16" L x 4" C-C x 1 1/4", 1 1/16" Pin Holes, U-Bolt Kit 3/4" x 4" x 6 7/8" L (2 per Spring), choosing a selection results in a full page refresh. Suspension Type Item Air Leaf with Tracking Rods Low and Low-Low Air Leaf Tandem (built . Req: OEM Reference: Remarks: 1: 327-483: Spring Pin; 1 1/4OD x 6 7/8Lg x 5 5/16 c/c: 6: . The primary responsibility of this feature is to provide ride quality and ease of handling to the vehicle. Cookie Policy | I give my express consent authorizing TruckersReport and its. Show more Shop the Peterbilt Mike store Factory Air Ride - How to install a dump kit. Several springs have two models of bushings installed. Front Suspensions 3.5" Wide Springs Front Suspensions 4" Wide Springs Four Spring Tandem Suspension Peterbilt - Air Leaf Single-Tandem Rear Air Suspension Key No. Part# 052-MPB75728 . Serving Car & Truck Fleet Management Professionals, Serving EV Intenders & Professionals In Commercial & Public Fleets, Serving Corporate, Executive, & Financial Managers Of Large Commercial Fleets, Serving Leaders In Fleet Mobility & Emerging Technology, Serving Public Sector Fleet Professionals, Serving Medium & Heavy Duty Commercial Truck Professionals, Serving Transit Bus, Private Motorcoach, & Passenger Rail Professionals, Serving School & Pupil Transportation Fleet Professionals, Serving Vocational & Service Fleet Professionals. We service heavy trucks as well, and recently added two new service shop bays to our four existing bays. However, this height may change when you start packing the vehicle with heavy cargo. The Kansas City location also offers online access to all inventory at Vander Haag's. Wheel-Well Closeouts. Elite Truck Parts Air Spring - Rolling Lobe - Hendrickson ID: ETP-8713. Pod Mounted Headlights. When I get on a certain road for my routine haul, it almost throws me out of the seat. Hence, they are only available on older models manufactured in the early 2000s. At the rear of the trailer, leaf spring suspensions actually provided a better ride quality in . Automotive Replacement Air Suspension Kits; Automotive Performance Parts & Accessories; Automotive Performance Shocks, Struts & Suspension; The highest air suspension a Peterbilt has is the Air leaf with 11.70 inches. What are the Peterbilt Flex Air Suspension Parts? It's just a regular air leaf, nothing special. Passenger side. Kenworth - Air Glide 130 (Peterbilt Front Air Leaf) Front Air Suspension: Key: Part Number: Description: No. With this feature, you will no longer hear a clunky and loud sound usually present in heavy-duty vehicles. If you have an account, sign in with your email address. and is known to be one of the lightweight suspensions installed in a semi truck. For better vehicle performance, you can adjust the height of the Peterbilt Flex air suspension. Create Estimate.