| Product Line | Chassis & Suspension |
| Category Name | Shock Absorbers |
| Part Type | Rear Shock Absorber |
| Alternate Part Name | Shock Absorber, Suspension Shock, Axle Shock |
| OEM Part Number | 85310 |
| Application Type | Semi-Trucks, Heavy Duty Trucks |
| Mounting Position | Rear Axle |
| Material | Steel |
| Body Diameter | 2.75 in. |
| Dust Tube | Yes |
| Collapsed Length | 11.71 in. |
| Compression | 578 lb. |
| Extended Length | 18.63 in. |
| Rebound | 1379 lb. |
| Recoil Cutoff | Yes |
| Net Weight | 8.80 lb. |
| Cross References | 1091379, 3199949, 3919994, 650404, 650404MT, 65404, 680239, 728614, 74409, 85310, A85310, K374, K374-29PLUS, K37429, K37429PLUS, K37432, K3747, M65404, M74409, M85310, SA5310, SA65404, SA74409 |
| Intended Application | - Compatible with a wide range of Kenworth trucks and tractors in the rear tandem axle position, including the C500, K100, K125, K300 (1993-2005), T2000 (1997-2011), T300, T400, T600, T800, and W900 series (including their B, L, S, A, etc. variants). This application is strictly functional for vehicles equipped with the Air Glide 100 (AG100) Rear Air Suspension, which typically uses an eight-bag system and requires four of these shock absorbers per vehicle.
- Compatible with various Ottawa yard trucks and maneuvering tractors in the rear position. Also validated for various International heavy-duty vehicle platforms in the rear position that require the same dimensional and damping specifications.
- Always compare with your OEM part number prior to purchase to confirm full compatibility.
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