Monroe Gas-Magnum
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Part Number: AM-140463306

Why Buy Monroe Gas-Magnum Truck Shock Absorbers?

The Monroe® Gas-Magnum® truck shock absorber is designed for mid to full size, hard working pick-up trucks and vans. These units provide firm control without a harsh ride. With up to twice the fluid capacity of standard 1" bore shocks, Monroe Gas-Magnum truck shocks work more efficiently with less effort.

The result: enhanced control with uncompromised ride comfort.

  1. All Weather Fluid: Contains special modifiers to reduce friction and ensure smooth rod reaction.
  2. Full Displaced Valving: Tuned specifically for each application, this valving automatically adjusts to road extremes to provide consistency and ride comfort.
  3. Sintered Iron Piston: Stronger than traditional metals, enhances durability for longer service life.
  4. Nitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration.
  5. 2" Reserve Tube: More fluid for more consistent performance.
  6. 1-3/8" Bore: Lower operating pressure than standard 1" bore units.
  7. 5/8" Piston Rod: Heavy-duty nitrocarburized rod* for long service life.
  8. Special Seal: "Self-lubricating" fluid seal designed to retain gas without excessive wear or friction.

* ON NON-DUST SHIELD UNITS ONLY.

FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories.
Shipping is not available to Canada for this item.

Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses.   

10 Year Warranty

This item is backed by our 10-year warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

Please note: Any modifications to an item of any kind before contacting us will void any and all warranty coverage for this item. Please contact us before modifying the part so that we have the opportunity to correct the situation.


Vehicle Fit

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  • 1987-1991 Chevrolet Blazer S10 Rear Passenger Side Shock Absorber
  • 1975-1986 Chevrolet C10 Rear Driver Side Shock Absorber
  • 1975-1986 Chevrolet C10 Rear Passenger Side Shock Absorber
  • 1973-1974 Chevrolet C10 Truck Rear Driver Side Shock Absorber
  • 1973-1974 Chevrolet C10 Truck Rear Passenger Side Shock Absorber
  • 1975-1986 Chevrolet C20 Rear Driver Side Shock Absorber
  • 1975-1986 Chevrolet C20 Rear Passenger Side Shock Absorber
  • 1973-1974 Chevrolet C20 Truck Rear Passenger Side Shock Absorber
  • 1973-1974 Chevrolet C20 Truck Rear Driver Side Shock Absorber
  • 1975-1986 Chevrolet K10 Rear Driver Side Shock Absorber
  • 1975-1986 Chevrolet K10 Rear Passenger Side Shock Absorber
  • 1973-1974 Chevrolet K10 Truck Rear Passenger Side Shock Absorber
  • 1973-1974 Chevrolet K10 Truck Rear Driver Side Shock Absorber
  • 1975-1986 Chevrolet K20 Rear Driver Side Shock Absorber
  • 1975-1986 Chevrolet K20 Rear Passenger Side Shock Absorber
  • 1973-1974 Chevrolet K20 Truck Rear Passenger Side Shock Absorber
  • 1973-1974 Chevrolet K20 Truck Rear Driver Side Shock Absorber
  • 1975-1980 Chevrolet P10 Rear Driver Side Shock Absorber
  • 1975-1980 Chevrolet P10 Rear Passenger Side Shock Absorber
  • 1973-1974 Chevrolet P10 Van Rear Driver Side Shock Absorber
  • 1973-1974 Chevrolet P10 Van Rear Passenger Side Shock Absorber
  • 1975-1989 Chevrolet P20 Rear Driver Side Shock Absorber
  • 1975-1989 Chevrolet P20 Rear Passenger Side Shock Absorber
  • 1973-1974 Chevrolet P20 Van Rear Driver Side Shock Absorber
  • 1973-1974 Chevrolet P20 Van Rear Passenger Side Shock Absorber
  • 1973-1986 Chevrolet Suburban C10 Rear Driver Side Shock Absorber
  • 1973-1986 Chevrolet Suburban C10 Rear Passenger Side Shock Absorber
  • 1973-1986 Chevrolet Suburban C20 Rear Driver Side Shock Absorber
  • 1973-1986 Chevrolet Suburban C20 Rear Passenger Side Shock Absorber
  • 1973-1986 Chevrolet Suburban K10 Rear Driver Side Shock Absorber
  • 1973-1986 Chevrolet Suburban K10 Rear Passenger Side Shock Absorber
  • 1973-1986 Chevrolet Suburban K20 Rear Driver Side Shock Absorber
  • 1973-1986 Chevrolet Suburban K20 Rear Passenger Side Shock Absorber
  • 1987-1988 Chevrolet Suburban R10 Rear Driver Side Shock Absorber
  • 1987-1988 Chevrolet Suburban R10 Rear Passenger Side Shock Absorber
  • 1989-1991 Chevrolet Suburban R1500 Rear Driver Side Shock Absorber
  • 1989-1991 Chevrolet Suburban R1500 Rear Passenger Side Shock Absorber
  • 1987-1988 Chevrolet Suburban R20 Rear Driver Side Shock Absorber
  • 1987-1988 Chevrolet Suburban R20 Rear Passenger Side Shock Absorber
  • 1989-1991 Chevrolet Suburban R2500 Rear Driver Side Shock Absorber
  • 1989-1991 Chevrolet Suburban R2500 Rear Passenger Side Shock Absorber
  • 1987-1988 Chevrolet Suburban V10 Rear Driver Side Shock Absorber
  • 1987-1988 Chevrolet Suburban V10 Rear Passenger Side Shock Absorber
  • 1989-1991 Chevrolet Suburban V1500 Rear Driver Side Shock Absorber
  • 1989-1991 Chevrolet Suburban V1500 Rear Passenger Side Shock Absorber
  • 1987-1988 Chevrolet Suburban V20 Rear Driver Side Shock Absorber
  • 1987-1988 Chevrolet Suburban V20 Rear Passenger Side Shock Absorber
  • 1989-1991 Chevrolet Suburban V2500 Rear Driver Side Shock Absorber
  • 1989-1991 Chevrolet Suburban V2500 Rear Passenger Side Shock Absorber
  • 1975-1978 GMC C15 Truck Rear Driver Side Shock Absorber
  • 1975-1978 GMC C15 Truck Rear Passenger Side Shock Absorber
  • 1973-1974 GMC C15-C1500 Suburban Rear Passenger Side Shock Absorber
  • 1973-1974 GMC C15-C1500 Suburban Rear Driver Side Shock Absorber
  • 1973-1974 GMC C15-C1500 Truck Rear Passenger Side Shock Absorber
  • 1973-1974 GMC C15-C1500 Truck Rear Driver Side Shock Absorber
  • 1979-1986 GMC C1500 Truck Rear Driver Side Shock Absorber
  • 1979-1986 GMC C1500 Truck Rear Passenger Side Shock Absorber
  • 1973-1974 GMC C25-C2500 Suburban Rear Driver Side Shock Absorber
  • 1973-1974 GMC C25-C2500 Suburban Rear Passenger Side Shock Absorber
  • 1979-1986 GMC C2500 Truck Rear Driver Side Shock Absorber
  • 1979-1986 GMC C2500 Truck Rear Passenger Side Shock Absorber
  • 1973-1991 GMC Jimmy Rear Driver Side Shock Absorber
  • 1973-1991 GMC Jimmy Rear Passenger Side Shock Absorber
  • 1983-1991 GMC Jimmy S-15 Rear Driver Side Shock Absorber
  • 1983-1991 GMC Jimmy S-15 Rear Passenger Side Shock Absorber
  • 1975-1978 GMC K15 Truck Rear Passenger Side Shock Absorber
  • 1975-1978 GMC K15 Truck Rear Driver Side Shock Absorber
  • 1973-1974 GMC K15/K1500 Suburban Rear Passenger Side Shock Absorber
  • 1973-1974 GMC K15/K1500 Suburban Rear Driver Side Shock Absorber
  • 1973-1974 GMC K15/K1500 Truck Rear Driver Side Shock Absorber
  • 1973-1974 GMC K15/K1500 Truck Rear Passenger Side Shock Absorber
  • 1979-1986 GMC K1500 Truck Rear Driver Side Shock Absorber
  • 1979-1986 GMC K1500 Truck Rear Passenger Side Shock Absorber
  • 1975-1978 GMC K25 Truck Rear Driver Side Shock Absorber
  • 1975-1978 GMC K25 Truck Rear Passenger Side Shock Absorber
  • 1973-1974 GMC K25/K2500 Suburban Rear Driver Side Shock Absorber
  • 1973-1974 GMC K25/K2500 Suburban Rear Passenger Side Shock Absorber
  • 1973-1974 GMC K25/K2500 Truck Rear Passenger Side Shock Absorber
  • 1973-1974 GMC K25/K2500 Truck Rear Driver Side Shock Absorber
  • 1979-1986 GMC K2500 Truck Rear Driver Side Shock Absorber
  • 1979-1986 GMC K2500 Truck Rear Passenger Side Shock Absorber
  • 1975-1978 GMC P15 Rear Driver Side Shock Absorber
  • 1975-1978 GMC P15 Rear Passenger Side Shock Absorber
  • 1973-1974 GMC P15/P1500 Van Rear Passenger Side Shock Absorber
  • 1973-1974 GMC P15/P1500 Van Rear Driver Side Shock Absorber
  • 1979-1980 GMC P1500 Rear Driver Side Shock Absorber
  • 1979-1980 GMC P1500 Rear Passenger Side Shock Absorber
  • 1975-1978 GMC P25 Rear Driver Side Shock Absorber
  • 1975-1978 GMC P25 Rear Passenger Side Shock Absorber
  • 1973-1974 GMC P25/P2500 Van Rear Passenger Side Shock Absorber
  • 1973-1974 GMC P25/P2500 Van Rear Driver Side Shock Absorber
  • 1979-1980 GMC P2500 Rear Driver Side Shock Absorber
  • 1979-1980 GMC P2500 Rear Passenger Side Shock Absorber
  • 1987 GMC R1500 Truck Rear Driver Side Shock Absorber
  • 1987 GMC R1500 Truck Rear Passenger Side Shock Absorber
  • 1987 GMC R2500 Truck Rear Driver Side Shock Absorber
  • 1987 GMC R2500 Truck Rear Passenger Side Shock Absorber
  • 1975-1986 GMC Suburban C1500 Rear Driver Side Shock Absorber
  • 1975-1986 GMC Suburban C1500 Rear Passenger Side Shock Absorber
  • 1975-1986 GMC Suburban C2500 Rear Driver Side Shock Absorber
  • 1975-1986 GMC Suburban C2500 Rear Passenger Side Shock Absorber
  • 1975-1986 GMC Suburban K1500 Rear Driver Side Shock Absorber
  • 1975-1986 GMC Suburban K1500 Rear Passenger Side Shock Absorber
  • 1975-1986 GMC Suburban K2500 Rear Driver Side Shock Absorber
  • 1975-1986 GMC Suburban K2500 Rear Passenger Side Shock Absorber
  • 1987-1991 GMC Suburban R1500 Rear Driver Side Shock Absorber
  • 1987-1991 GMC Suburban R1500 Rear Passenger Side Shock Absorber
  • 1987-1991 GMC Suburban R2500 Rear Driver Side Shock Absorber
  • 1987-1991 GMC Suburban R2500 Rear Passenger Side Shock Absorber
  • 1987-1991 GMC Suburban V1500 Rear Driver Side Shock Absorber
  • 1987-1991 GMC Suburban V1500 Rear Passenger Side Shock Absorber
  • 1987-1991 GMC Suburban V2500 Rear Driver Side Shock Absorber
  • 1987-1991 GMC Suburban V2500 Rear Passenger Side Shock Absorber
  • 1987 GMC V1500 Truck Rear Driver Side Shock Absorber
  • 1987 GMC V1500 Truck Rear Passenger Side Shock Absorber
  • 1987 GMC V2500 Truck Rear Driver Side Shock Absorber
  • 1987 GMC V2500 Truck Rear Passenger Side Shock Absorber

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