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

Built for severe use class 6-8 trucks, the Magnum rear shock covers an extensive range of Peterbilt models spanning several decades, delivering consistent large-bore performance for long-haul applications.

• FOR HARDWORKING COMMERCIAL VEHICLES: Designed to handle high mileage and severe use class 6-8 trucks and buses.
• CONSISTENT RIDE: All-weather fluid handles extreme temperatures; larger 2-3/8-in. reserve tube holds more fluid (most applications).
• EXCEPTIONAL HANDLING: 10-Stage valving tuned to each vehicle; larger 1-3/4-in. bore for efficient damping (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 rear suspension on Peterbilt 330, 357, 362, 372, 375, 376, 377, 378, 379, 384, 385, 386, and 587 spanning 1981-2016.

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Cross References:
Peterbilt: 0305384, Peterbilt: 0306084, Peterbilt: 0307423, Peterbilt: 665633, Paccar Parts: 0306084, Kenworth: 0306085PLUS, Paccar Parts: 0307423, Sachs: 315549, KYB: 341620, Volvo GM Heavy Truck: 3919946, Neway: 57365400, Mack: 650400, Monroe Shocks & Struts: 650400, NAPA Shocks: 65400, Paccar Parts: 665633, Gabriel: 85033, Gabriel: 89427, Navistar: AMS650400, FCS: F346598, Bulldog HD: HD12150037, Meritor: M85033, Meritor: M89427, Volvo GM Heavy Truck: SA5033, KYB: 341621, Paccar Parts: 306084, Paccar Parts: 307423, Peterbilt: 305384, FCS: F343368, FCS: F344353, FCS: F344355, FCS: F346599, FCS: F346633, FCS: F347215, FCS: F347303, Alliance Truck Parts: ABPN32G900039, Alliance Truck Parts: ABPN32O900039, Meritor: 341620, Dayton Parts: 44185033, Alliance Parts: ABPN32G900039, Alliance Parts: ABPN32O900039, RK4055, 65400

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