The Monroe® Magnum® Rear Suspension Shock Absorber for class 6-8 vehicles is the first gas-charged, large-bore shock for air spring and taper leaf suspensions. The nitrogen gas charge provides the fast response essential for today's heavy-duty truck suspension systems.

A comprehensive rear Magnum shock covering a wide range of Peterbilt conventional and sleeper cab trucks across multiple decades, backed by Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.

• For Hardworking Commercial Vehicles: Designed for high mileage and severe use class 6-8 trucks and buses.
• Consistent Ride: All-weather fluid with special additives handles extreme temperatures; larger 2-3/8-in. reserve tube holds more fluid (most applications).
• Exceptional Handling: 10-Stage valving tuned per vehicle; larger 1-3/4-in. bore for more efficient damping and a smoother ride (most applications).
• Strong and Durable: Shouldered and bonded bushing with sleeve prevents bushing walkout; arc welds up to 360° for durability.
• Built to Last: Hydraulic lock-out prevents over-extension of air bags and protects the seal assembly (most applications).
• Longer Service Life: PTFE-coated bearing and nitrocarburized piston rod for durability and extended service life (most applications).
• Reduced NVH: Exceptional control isolating impact-related noise, vibration, and harshness under most driving conditions.
• Improves Performance: Nitrogen gas-charge maintains tire-to-road contact by reducing aeration and shock fade.
• Buy with Confidence: Comes with Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.

Common Fits: Peterbilt 320 (1987-2018), Peterbilt 330 (1995-2021), Peterbilt 335 (2005-2010), Peterbilt 337 (2010-2023), Peterbilt 340 (2007-2010), Peterbilt 348 (2010-2023), Peterbilt 357 (1986-2008), Peterbilt 359 (1981-1988), Peterbilt 362 (1981-2006), Peterbilt 365 (2014-2023), Peterbilt 367 (2008-2024), Peterbilt 375 (1987-1996), Peterbilt 377 (1987-2001), Peterbilt 378 (1988-2007), Peterbilt 379 (1986-2007), Peterbilt 384 (2008-2016), Peterbilt 386 (2006-2013), Peterbilt 387 (not listed), Peterbilt 388 (2008-2015), Peterbilt 389 (2008-2024), Peterbilt 520 (2017-2024), Peterbilt 567 (2014-2024), Peterbilt 579 (2013-2024), Peterbilt 587 (2011-2018). All fitments are rear position.

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Cross References:
Peterbilt: 0307421, Peterbilt: C716002, General Motors: 22024673, Peterbilt: 307421, Sachs: 312724, Sachs: 316310, Volvo GM Heavy Truck: 3919988, KYB: 441601, Navistar: 56101Z1030, NAPA Shocks: 65444, Paccar Parts: 680586, Kenworth: 680586, Monroe Shocks & Struts: 74417, Gold Shock Absorber: 8180255, Gabriel: 85311, Gabriel: 85710, General Motors: 9799992633, FOX Commercial Truck Shocks: 98031015, Volvo GM Heavy Truck: SA5311, KYB: 341620, KYB: 341621, Gabriel: 74417, Dayton Parts: 441853115444, Fleetrite: AMS65444, 65444

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UPC:

048598173447

Mfr Part Number:

65444

Country of origin (CO):

US

Color:

Black

Compressed Length:

14.97 (unece.unit.INH)

Cylinder Color:

Black

Cylinder Finish:

Painted

Dust Shield Included:

Yes

Dust Shield Material:

Metal

Extended Length:

23.8125 (unece.unit.INH)

Gas Charged:

Yes

Grade Type:

Premium

Hydraulic Lockout:

Yes

Includes Bump Stop:

No

Internal Rebound Bumper:

No

Lower Mount Code:

L4

Lower Mount Type:

Loop (Eyelet) Bushing

Mounting Hardware Included:

Yes

Shock Absorber Body End Measuring Point:

Center of Loop

Shock Absorber Rod End Measuring Point:

Base of Stem

Travel Length:

8.843 (unece.unit.INH)

Upper Mount Code:

S6

Lower Mount Code48:

L4

Upper Mount Code74:

S6

Lower Mount Type49:

Loop Bushing Mount - 1" Bushing ID X 1.3/4" Bushing OAL

Parts Pack(s):

P01482

Upper Mount Type75:

Stem Mount - 3.5/16" Stem Length X 5/8"-11 Thread Pitch