Monroe 66145 Magnum Cab Shock Absorber

The Monroe 66145 Magnum Cab Shock Absorber is a heavy-duty, nitrogen gas-charged shock designed for commercial truck cab suspension applications. Engineered for demanding, high-mileage service, this shock helps isolate the cab from the frame while providing improved ride comfort, handling, and control.

The Monroe Magnum Cab features velocity-sensitive valving, a larger 2-inch reserve tube, and a 1-3/8-inch bore to provide consistent performance under demanding operating conditions. Its durable bushing and sleeve design helps resist bushing walkout, while the PTFE-coated bearing and nitrocarburized piston rod contribute to long service life.

Features & Benefits

• Heavy-duty shock absorber designed for commercial truck cab suspensions
• Nitrogen gas-charged for improved ride and handling
• Velocity-sensitive, 10-stage valving for consistent suspension control
• 2-inch reserve tube provides increased fluid capacity
• 1-3/8-inch bore helps deliver efficient damping performance
• PTFE-coated bearing reduces friction and wear
• Nitrocarburized piston rod provides enhanced durability
• Durable loop bushing and sleeve mounting design
• Helps reduce cab vibration, noise, and harshness
• Designed for high-mileage and severe-duty applications

Specifications

• Extended Length: 13.13 in. / 333.4 mm
• Compressed Length: 9.13 in. / 231.8 mm
• Travel: 4.00 in. / 101.6 mm
• Upper Mount: Loop bushing and sleeve
• Lower Mount: Loop bushing and sleeve
• Gas Charged: Yes
• Dust Shield: Included
• Hydraulic Lockout: No
• Mounting Hardware: Not included
• Sold As: 1 shock absorber

Vehicle Applications

Monroe 66145 is used on various Peterbilt heavy-duty truck cab applications, including:

• Peterbilt 357
• Peterbilt 367
• Peterbilt 375
• Peterbilt 376
• Peterbilt 377
• Peterbilt 378
• Peterbilt 379
• Peterbilt 386
• Peterbilt 389

Application years vary by model. Verify the vehicle year, model, and cab configuration before ordering.

Cross-Reference Numbers

Common cross-reference numbers include Gabriel 83008, Automann A83008, Meritor M83008, Haldex SA66145, Sachs 317535, Peterbilt B716007/R716007, and Dayton 44183008. Cross-reference numbers should be verified for exact application compatibility.

Note: Verify fitment using the vehicle application or original equipment part number before purchase.