2018 Peterbilt 320 Shock Absorber
9 itemsReplace a worn shock absorber to reduce bouncing, body roll, and uneven tire wear. Shop front and rear suspension shocks built to restore ride control and comfort.
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Find the Right Shock Absorber for Your Vehicle
Shock absorbers help control suspension movement after bumps and during changes in direction. The right car shock absorber depends on the vehicle, axle position, mounting design, and package configuration. Start with the A-Premium vehicle selector, then confirm whether the listing is for the front, rear, or both ends of the vehicle. Review the product notes before ordering, especially when the vehicle has a specific drive layout, suspension option, or a shock-and-strut combination.
Front, Rear, and Package Differences
Front shock absorber and rear shock absorber listings can differ in length, mounting configuration, and the number of pieces supplied. The catalog includes front-pair listings, rear-pair listings, and front-and-rear kits. Some product pages identify gas construction, dust covers, or a mono-tube or twin-tube design. Treat these as product-specific details. Match the axle, driver/passenger scope where relevant, and package quantity to the item description.
Shock Absorbers and Struts Are Different Parts
A conventional shock absorber is not automatically interchangeable with a strut. Some vehicles use shocks, some use struts, and some catalog packages contain both. Confirm the suspension design and mounting points before selecting a product.
Symptoms That Need a Full Suspension Inspection
Excessive bouncing after a bump, fluid on a damper, uneven tire wear, or a change in handling may call for inspection, but these conditions do not prove a shock has failed. Check for worn mounts, damaged springs, tire problems, and loose links. If a ride-height concern is present, review the related coil springs after confirming the vehicle uses a separate spring. A technician can assess the whole suspension before you buy a replacement.
Fitment Checks for Suspension Shocks
Use the vehicle selector as the starting point, then compare the selected item's placement, quantity, mounting design, and fitment notes. A listing may be limited to a drive layout, trim-level suspension, or an exclusion such as self-leveling equipment. Verify whether the item is a single shock, a driver/passenger pair, or a full kit. Keep replacement hardware separate unless it appears in the product's parts-included field.
Replacement Decisions and Related Parts
Replacing a damaged unit is not the same as choosing every suspension component at once. If the vehicle uses matched units across an axle, review the other side's condition and the service manual before choosing a pair. Noise can also come from mounts or stabilizer components; relevant sway bar links can be inspected when the symptom occurs over uneven pavement. Follow vehicle-specific service information for support, fastening, and final checks.
Frequently Asked Questions (FAQ)
Are shocks and struts the same thing?
No. A shock absorber mainly controls motion, while a strut is a suspension assembly that can also support other vehicle functions. Your vehicle may use one design or a mix of components. Confirm the original suspension layout and the selected product's mounting description before ordering.
Should I replace front or rear shocks in pairs?
Replacing matched components on the same axle is commonly considered when both units have similar age and use, but the correct decision depends on inspection results and the vehicle procedure. Compare the condition of the opposite side, the available package quantity, and product notes before selecting one item or a pair.
Will a bouncy ride prove that the shocks need replacement?
No. A bouncy ride can arise from several suspension or tire conditions. Inspect shocks or struts, springs, mounts, tires, and related links rather than buying from one symptom. If you see leakage or damage, use the vehicle's service information and a qualified inspection to determine the repair.
Can a front shock absorber fit the rear?
Usually not. Front and rear shock absorbers can use different lengths, mount styles, travel ranges, and package quantities. Even a visually similar part may not match the vehicle's intended location. Use the placement filter and confirm the product page's installation position before ordering.
Do all shock absorber listings include dust covers or mounting parts?
No. Some catalog items list dust covers or other pieces, while others are sold as the shock absorber only. Included parts vary by SKU and package. Read the details and parts-included fields for the exact item, then compare them with the components required by the vehicle service procedure.
Frequently Asked Questions
What’s the difference between shock absorbers and struts?
How do I know if I need front end shocks, rear shocks, or all four?
Are twin tube shocks good for daily driving?
Do adjustable shocks help with towing or heavy loads?
Can worn shocks affect braking and steering?
Should I replace coil springs when I replace shocks?
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