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

Purpose-built for medium-duty cab-over and conventional trucks including Isuzu N-Series and Chevrolet LCF platforms, the Magnum delivers 10-stage vehicle-specific valving and is 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: Isuzu NPR, NPR-HD, NPR-XD, NQR, NRR, and FTR (various years 1986-2024); Chevrolet LCF 3500, 4500, 4500HD, 4500XD, 5500XD, 5500HD, 5500HG, 5500XG (2016-2024); Chevrolet and GMC W4500/W5500 Tiltmaster and Forward (1987-2010). All fitments are front position.

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Cross References:
Chevrolet: 8972536200, Chevrolet: 8982326711, Chevrolet: 8982326721, Chevrolet: 97253621, Chevrolet: 98232671, GMC: 8973070240, GMC: 97253621, Isuzu: 8944549870, Isuzu: 8970830270, Isuzu: 8972536200, Isuzu: 8972536201, Isuzu: 8972536210, Isuzu: 8973070240, Isuzu: 8982326710, Isuzu: 8982326711, Isuzu: 8982326720, Isuzu: 8982326721, PRT HD: 170264, Sachs: 317945, KYB: 345609, UD: 561000T825, UD: 561100T801, Neway: 57366653, Mack: 660208MT, NAPA Shocks: 66653, Gabriel: 83515, Isuzu: 8970830290, General Motors: 8970830290, Gold Shock Absorber: 9160407, General Motors: 97083029, General Motors: 97184900, General Motors: 97253621, General Motors: 98232671, Automann: AG63616, Navistar: AMS660208, FCS: F346634, Gabriel: G60177, Meritor: MG60177, Haldex: SA66653, KYB: 345610, KYB: KG6198, Meritor: 98232671, Dayton Parts: 44183515, Chevrolet: 951630471, General Motors: 97253620, Isuzu: 94454987, GMC: 97083029, Chevrolet: 8944549860, Chevrolet: 8944549870, Chevrolet: 94454987, Chevrolet: 97083027, Chevrolet: 97083029, Chevrolet: 97253620, GMC: 51630647, GMC: 8944549860, GMC: 8944549870, GMC: 8970830290, GMC: 8972536200, GMC: 94454986, GMC: 94454987, GMC: 951630471, GMC: 9516306471, GMC: 97083027, GMC: 97184900, GMC: 97253620, GMC: 98098125, GMC: 98232671, Isuzu: 51630647, Isuzu: 94454986, Isuzu: 9516306471, Isuzu: 97083027, Isuzu: 97253620, Isuzu: 98098125, Isuzu: 98098127, Isuzu: 8983810120, 66653

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UPC:

048598075086

Mfr Part Number:

66653

Country of origin (CO):

US

Color:

Black

Compressed Length:

13.96 (unece.unit.INH)

Cylinder Color:

Black

Cylinder Finish:

Painted

Dust Shield Included:

Yes

Dust Shield Material:

Metal

Extended Length:

23.25 (unece.unit.INH)

Gas Charged:

Yes

Grade Type:

Premium

Hydraulic Lockout:

No

Includes Bump Stop:

No

Internal Rebound Bumper:

No

Lower Mount Code:

L3

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:

9.29 (unece.unit.INH)

Upper Mount Code:

S4

Lower Mount Code48:

L3

Upper Mount Code74:

S4

Lower Mount Type49:

Loop Bushing Mount - 3/4" Bushing ID X 1.9/16" Bushing OAL

Parts Pack(s):

P01134

Upper Mount Type75:

Stem Mount - 2.3/8" Stem Length X 3/8"-16 Thread Pitch