Description
Rear shock absorber for Kenworth Class 8 conventional trucks (W900, T800, T600A, T300, K100E, K300) with cab-mounted rear suspensions and Freightliner XC motorhome chassis. The Monroe 65436 is a Gas-Magnum 65 nitrogen-charged shock with 1-3/4″ bore, 16.875″ extended / 11.375″ compressed length, hydraulic lockout, and twin S6 stem mounts, replacing Kenworth 665903/665944, Paccar 665918, and Gabriel 85900.
Signs You Need a New Rear Shock Absorber
- Excessive bouncing or floating sensation over bumps
- Rear-end squat during acceleration or under load
- Vehicle sway in crosswinds
- Cupped or feathered drive-axle tire wear
- Visible oil leakage from shock body or shaft
Specifications
| Manufacturer | Monroe |
|---|---|
| Part Number | 65436 |
| Series | Gas-Magnum 65 |
| Part Type | Rear Shock Absorber, Twin-Tube Gas-Charged |
| Bore Diameter | 1-3/4 in (44.6 mm) |
| Extended Length | 16.875 in (42.9 cm) |
| Compressed Length | 11.375 in (28.9 cm) |
| Travel | 5.5 in (14.0 cm) |
| Upper Mount | Stem (S6) |
| Lower Mount | Stem (S6) |
| Gas Charge | Nitrogen |
| Hydraulic Lockout | Yes |
| Dust Shield | Yes |
| Parts Pack | P01482 |
Cross References
This shock absorber replaces or is equivalent to the following part numbers:
- Kenworth: 665903, 665944, 70701, 481700000493
- Peterbilt: 665944PLUS
- Paccar: 665918
- Freightliner: 1617144000, 1617361000, 1618103000, 1619391000
- Gabriel: 85900
- Meritor: M85900
- Sachs: 311633, 315402, 315404, 315553, 481700000477, 481700131919
- Volvo / White / GMC: SA5900, RCSA5900
- International / Navistar: AMS650436
- Mack: 650436MT
- Neway: 57365436
- NAPA: 65436
- Haldex: SA65436
- Alliance: ABPN32G900047, ABPN32O900047
- Automann: A85900
- Bulldog HD: HD12150077
- Also known as: Dayton 44185900 / M65436, Gold 8160118, FCS F343376, Monroe alt 650436
Applications
This shock absorber fits the rear position on the following trucks:
- Kenworth K100 (1981–1985); K100E (1985–2003, 2005–2006)
- Kenworth K300 (1993–2005); T300 (1995–2008)
- Kenworth T400 (1982, 1984, 1989–1999)
- Kenworth T600A (1986–2008)
- Kenworth T800 (1987–2020)
- Kenworth W900 (1981–2020)
- Kenworth C500 (2010–2016)
- Freightliner XC motorhome chassis (2001–2005)
Sold individually — replace rear shocks in pairs for balanced handling. Verify mount style (S6 stem) and OEM part number before ordering.









