The Monroe® Magnum® Rear, Front, and Tag Axle Suspension Shock Absorber for class 3-6 vehicles is gas-charged for quicker response and a stable, more comfortable ride. Designed to handle high mileage and severe use demands, it replaces worn units to help reduce excessive vibration.

This multi-position Magnum shock covers rear, front, and tag axle applications across a wide range of Peterbilt, Kenworth, Freightliner, International, Mack, Jayco, and GMC platforms, backed by Monroe's 90-day Risk Free Ride Offer.

• For Hardworking Commercial Vehicles: Designed for high mileage and severe use class 3-6 trucks and buses.
• Consistent Ride: All-weather fluid with special additives handles extreme temperatures; 2-in. or 2-1/4-in. reserve tube holds more fluid (when required).
• Exceptional Handling: 10-Stage valving tuned per vehicle; larger 1-3/8-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: Isolates 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 357, 362, 365, 367, 372, 375, 376, 377, 378, 379, 384, 385, 386, 387, 389, 567, 587 (various years, rear); Kenworth T400 and T800 (rear); Freightliner Coronado (2001-2020, rear) and M2 106 (2009-2019, front); International HX520 (2018-2024, rear); Mack MD6 and MD7 (2021-2024, front); Jayco Seneca (2012-2017, front); GMC G3500 and G35 (tag axle).

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Cross References:
Holland: 90044642, Neway: 90044642, GMC: 22011983, GMC: 22012098, GMC: 22046408, GMC: 22064002, GMC: 22064003, GMC: 22064004, GMC: 22064005, GMC: 22064429, GMC: 22064430, GMC: 3187847, Hendrickson: S2212, Western Star: 359014403, Freightliner: 665174, Kenworth: 665174, Peterbilt: 359014403, Peterbilt: 665174, Watson & Chalin: 10148, Batco: 1083204, Batco: 1083206, Volvo Truck: 1091349, Freightliner: 1398980, Monroe Shocks & Struts: 16335, PRT HD: 170133, Reyco Granning: 2096001, Monroe Shocks & Struts: 3043, General Motors: 3166287, General Motors: 3171459, General Motors: 3178165, Sachs: 317964, General Motors: 3197642, KYB: 345608, Volvo GM Heavy Truck: 3919915, Trailmobile: 434236, Trailmobile: 434279, Trailmobile: 438031, General Motors: 4940610, ACDelco: 50827, Navistar: 537524C91, General Motors: 5521698, General Motors: 5521699, Neway: 57306895, Neway: 57365433, Neway: 57366636, Duplex: 59024, Dura Suspension: 59024, Mack: 600130MT, Monroe Shocks & Struts: 601130, Monroe Shocks & Struts: 6026, Thomas Built Buses: 61300114, Mack: 650433MT, Mack: 660130MT, Monroe Shocks & Struts: 661130, Gabriel: 665109, Paccar Parts: 665174, Chalmers Suspension: 665174, Gabriel: 665265, Hendrickson: 665267, Ridewell Corp: 665267, Gabriel: 665495, NAPA Shocks: 66636, Gabriel: 680570, Monroe Shocks & Struts: 6877, Gabriel: 727604, Gabriel: 728620, Gabriel: 728631, Mack: 78530771, Gold Shock Absorber: 8150371, Gabriel: 83113, Gabriel: 83127, Gabriel: 83204, Gabriel: 85326, Gabriel: 85910, Gabriel: 89437, Neway: 90044017, Neway: 90044083, Neway: 90044681, Neway: 90044689, Neway: 90044915, Blue Bird: 90044915, Neway: 90044983, Freightliner: 90045083, Navistar: AMS600130, Navistar: AMS650433, Navistar: AMS660130, Neway: AR1141, Neway: AR1141C, Hendrickson: B23316, Euclid: E83204, Euclid: E85008, Euclid: E85029, FCS: F347203, FCS: F347328, Nuturn/leland: L57649, Nuturn/leland: L57661, Nuturn/leland: L59030, Meritor: M83127, Stoughton Trailers: NW90044979, Volvo GM Heavy Truck: RCSA3127, Hendrickson: S23316, Volvo GM Heavy Truck: SA3127, KYB: 341620, KYB: 341621, KYB: 341628, Navistar: 3516764C1, Alliance Truck Parts: ABPN32G900083, Alliance Truck Parts: ABPN32O900083, Watson & Chalin: 89437, Dayton Parts: 44183127, GMC: 4940610, GMC: 3166287, GMC: 3171459, GMC: 3178165, GMC: 3197642, GMC: 5521698, GMC: 5521699, Kalmar: CT00001760, Ottawa: CT00001760, Mack: 543566636, Alliance Parts: ABPN32G900083, Alliance Parts: ABPN32O900083, ZF: 471700015341, 66636, 83127

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UPC:

048598074911

Mfr Part Number:

66636

Country of origin (CO):

US

Color:

Black

Compressed Length:

13.4375 (unece.unit.INH)

Cylinder Color:

Black

Cylinder Finish:

Painted

Dust Shield Included:

Yes

Dust Shield Material:

Metal

Extended Length:

20.4531 (unece.unit.INH)

Finish:

Painted

Gas Charged:

Yes

Grade Type:

Premium

Hydraulic Lockout:

Yes

Includes Bump Stop:

No

Internal Rebound Bumper:

No

Lower Mount Code:

LS54

Lower Mount Type:

Loop (Eyelet) Bushing and Sleeve

Mounting Hardware Included:

No

Shock Absorber Body End Measuring Point:

Center of Loop

Shock Absorber Rod End Measuring Point:

Center of Loop

Travel Length:

7.015 (unece.unit.INH)

Upper Mount Code:

LS54

Adjustable Damping4:

No

Foam Cell Design38:

No

Lower Mount Code48:

LS54

Upper Mount Code74:

LS54

Lower Mount Type49:

Loop Bushing and Sleeve Mount - 3/4" Sleeve ID X 1.3/4" Sleeve OAL

Shaft Diameter61:

16 MM

Upper Mount Type75:

Loop Bushing and Sleeve Mount - 3/4" Sleeve ID X 1.3/4" Sleeve OAL