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, replacing worn-out units with Magnum® shocks helps reduce excessive vibration.

Purpose-built for class 3-6 commercial trucks, the Magnum delivers reliable front suspension performance for Chevrolet Silverado HD, International, and Nexus motorhome platforms with 10-stage valving and durable construction.

• FOR HARDWORKING COMMERCIAL VEHICLES: Designed to handle high mileage and severe use class 3-6 trucks and buses.
• CONSISTENT RIDE: All-weather fluid handles extreme temperatures; 2-in. or 2-1/4-in. reserve tube holds more fluid (when required).
• EXCEPTIONAL HANDLING: 10-Stage valving tuned to each vehicle; larger 1-3/8-in. bore for consistent, smooth ride (most applications).
• STRONG AND DURABLE: Shouldered and bonded bushings protect from bushing walkout; arc welds up to 360° for durability.
• BUILT TO LAST: Robust 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 long-lasting durability (most applications).
• REDUCED NOISE, VIBRATION AND HARSHNESS: Exceptional control isolating NVH under most driving conditions.
• IMPROVES PERFORMANCE: Nitrogen gas-charge reduces aeration and shock fade.
• BUY WITH CONFIDENCE: Comes with Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.

Common Fits: Compatible with front suspension on 2019-2025 Chevrolet Silverado 4500 HD, 5500 HD, and 6500 HD, 2019-2025 International CV515, 2010-2018 International TerraStar, and 2014-2024 Nexus Ghost and Phantom.

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Cross References:
International Harvester (IHC): 3885832C1, International Harvester (IHC): 3885832C2, International Harvester (IHC): 3902993C1, International Harvester (IHC): 3902993C2, International Harvester (IHC): 3902993C3, International Harvester (IHC): 3991991C1, Mack: 14QK2121, Navistar: 3885832C1, Navistar: 3885832C2, Navistar: 3902993C1, Navistar: 3902993C2, Navistar: 3902993C3, Navistar: 3989717C1, Navistar: 3991991C1, NAPA Shocks: 66445, Gabriel: 83135, PRT HD: 925048, Bulldog HD: HD12140642, Meritor: M83135, Navistar: 925048, F66445, 66445

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UPC:

048598127389

Mfr Part Number:

66445

Country of origin (CO):

US

Color:

Black

Compressed Length:

12.39 (unece.unit.INH)

Cylinder Color:

Black

Cylinder Finish:

Painted

Dust Shield Included:

Yes

Extended Length:

18.99 (unece.unit.INH)

Gas Charged:

Yes

Grade Type:

Premium

Hydraulic Lockout:

No

Includes Bump Stop:

No

Internal Rebound Bumper:

No

Lower Mount Code:

LS53

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:

6.59 (unece.unit.INH)

Upper Mount Code:

LS53

Lower Mount Code48:

LS53

Upper Mount Code74:

LS53

Lower Mount Type49:

Loop Bushing and Sleeve Mount - 5/8"-16MM Sleeve ID X 2" Sleeve OAL

Upper Mount Type75:

Loop Bushing and Sleeve Mount - 5/8" Sleeve ID X 2" Sleeve OAL

Body Diameter:

50.8 (unece.unit.MMT)