Monroe

Magnum OE Replacement Shocks

66653
$69.99

In Stock

Estimated Delivery in 3-7 business days

Monroe

Magnum OE Replacement Shocks

66653
$69.99

In Stock

Estimated Delivery in 3-7 business days

Authorized dealer
Free shipping on orders above $250 within the lower 48 United States
Brand new parts with warranty coverage
Free 30-day return and exchange on qualifying orders
Got Questions?
Our experts are here to help!
Part Numbers & Details
1 Shock Absorber
Package contains a single shock.
Monroe Limited Lifetime Warranty
Manufacturer provided lifetime warranty and exclusive Feel the Difference Guarantee.
Factory Hardware for Installation
All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation.
Designed for Trucks and Vans
Engineered for hardworking full-size trucks and vans and features full-displaced valving on compression cycles to deliver controlled ride and handling
Heavy Duty Build
Heavy-duty nitrocarburized rod (non-dust shield units only) and sintered iron piston enhance durability for longer service life while self-lubricating fluid seal reduces friction against piston rod to reduce wear
Nitrogen gas charge
Maintains tire-to-road contact for improved ride and handling by reducing aeration and shock fade
Specifications
Part NumberItemQuantityExtended LengthCompressed LengthTravelTop MountBottom Mount
66653Shock Absorber123.25"13.96"9.29"OEMEYELET
Product Details

Designed for midsize and full-size trucks and vans, Monroe Gas-Magnum shock absorbers provide firm control without a harsh ride. With up to twice the fluid capacity of standard 1-in. bore shocks, they work more efficiently with less effort.

Compatibility List
YearMakeModelDrivePosition
1995ChevroletW4500 TiltmasterFront
1994ChevroletW4500 TiltmasterFront
1993ChevroletW4500 TiltmasterFront
1992ChevroletW4500 TiltmasterFront
2009GMCW4500 ForwardFront
2008GMCW4500 ForwardFront
2008GMCW4500 ForwardFront
2007GMCW4500 ForwardFront
2007GMCW4500 ForwardFront
2006GMCW4500 ForwardFront
2006GMCW4500 ForwardFront
2005GMCW4500 ForwardFront
2005GMCW4500 ForwardFront
2004GMCW4500 ForwardFront
2004GMCW4500 ForwardFront
2003GMCW4500 ForwardFront
2003GMCW4500 ForwardFront
2002GMCW4500 ForwardFront
2001GMCW4500 ForwardFront
2000GMCW4500 ForwardFront
2009GMCW5500 ForwardFront
2008GMCW5500 ForwardFront
2008GMCW5500 ForwardFront
2007GMCW5500 ForwardFront
2007GMCW5500 ForwardFront
2006GMCW5500 ForwardFront
2006GMCW5500 ForwardFront
2005GMCW5500 ForwardFront
2005GMCW5500 ForwardFront
2004GMCW5500 ForwardFront
2004GMCW5500 ForwardFront
2003GMCW5500 ForwardFront
2003GMCW5500 ForwardFront
2002GMCW5500 ForwardFront
2001GMCW5500 ForwardFront
2000GMCW5500 ForwardFront
2018IsuzuNPRFront
2017IsuzuNPRFront
2016IsuzuNPRFront
2015IsuzuNPRFront
2014IsuzuNPRFront
2013IsuzuNPRFront
2012IsuzuNPRFront
2011IsuzuNPRFront
2010IsuzuNPRFront
2009IsuzuNPRFront
2008IsuzuNPRFront
2007IsuzuNPRFront
2006IsuzuNPRFront
2005IsuzuNPRFront
2004IsuzuNPRFront
2003IsuzuNPRFront
2002IsuzuNPRFront
2001IsuzuNPRFront
2000IsuzuNPRFront
1999IsuzuNPRFront
1998IsuzuNPRFront
1997IsuzuNPRFront
1996IsuzuNPRFront
1995IsuzuNPRFront
1994IsuzuNPRFront
1993IsuzuNPRFront
1992IsuzuNPRFront
1991IsuzuNPRFront
1990IsuzuNPRFront
1989IsuzuNPRFront
1988IsuzuNPRFront
1987IsuzuNPRFront
1986IsuzuNPRFront
2019IsuzuNQRFront
2018IsuzuNQRFront
2017IsuzuNQRFront
2016IsuzuNQRFront
2015IsuzuNQRFront
2014IsuzuNQRFront
2013IsuzuNQRFront
2012IsuzuNQRFront
2011IsuzuNQRFront
2010IsuzuNQRFront
2009IsuzuNQRFront
2008IsuzuNQRFront
2007IsuzuNQRFront
2006IsuzuNQRFront
2005IsuzuNQRFront
2004IsuzuNQRFront
2003IsuzuNQRFront
2002IsuzuNQRFront
2001IsuzuNQRFront
2000IsuzuNQRFront
2019IsuzuNRRFront
2018IsuzuNRRFront
2017IsuzuNRRFront
2016IsuzuNRRFront
2015IsuzuNRRFront
2014IsuzuNRRFront
2013IsuzuNRRFront
2012IsuzuNRRFront
2011IsuzuNRRFront
2010IsuzuNRRFront
2009IsuzuNRRFront
2008IsuzuNRRFront
2007IsuzuNRRFront
2006IsuzuNRRFront
2005IsuzuNRRFront
2018Peterbilt389Rear
2003Ud1200Front
2002Ud1200Front
2001Ud1200Front
2000Ud1200Front
1999Ud1200Front
2007Ud1300Front
2006Ud1300Front
2005Ud1300Front
2010Ud1400Front
2009Ud1400Front
2008Ud1400Front
2007Ud1400Front
2006Ud1400Front
2005Ud1400Front
2004Ud1400Front
2003Ud1400Front
2002Ud1400Front
2001Ud1400Front
2000Ud1400Front
1999Ud1400Front
1998Ud1400Front
1997Ud1400Front
1996Ud1400Front
1995Ud1400Front
1994Ud1400Front

Monroe Manufacturer's Warranty

DRiV warrants qualifying Monroe products against defects and wear-out when used on private passenger cars and light trucks under normal operating conditions, for as long as such original purchaser owns the vehicle on which they were originally installed.

Qualifying Products

  • Monroe OESpectrum shocks and struts
  • Monroe Reflex shocks and struts
  • Monroe Quick-Strut assembly
  • Monroe Gas-Magnum shocks
  • Monroe Magnum loaded strut assembly
  • DRiV's obligation under this warranty is limited to replacement of the worn-out or defective product in accordance with this warranty. Cost of removal and installation are not included, and any incidental and consequential damages are excluded under this warranty, regardless of when the failure occurs. This warranty has no cash value.

    To make a claim under this warranty, return the worn-out or defective product with the dated original receipt to the dealer or retailer from whom it was purchased.

    This warranty does not apply to purchases made through unauthorized retailers/dealers including unauthorized online sellers. DRiV has no way to confirm the authenticity and quality of products sold through unauthorized resellers and is not obligated to honor warranty claims when purchased from an unauthorized individual, unauthorized retailer/dealer, or unauthorized online retailer. Purchases made through auction sites, marketplaces, private or third-party sales, or other unauthorized online retailers are not eligible for warranty.

    This warranty does not apply to: (i) any other costs, including costs of removal, installation, diagnostic time, and any other expenses arising out of replacing the product (ii) products which have been installed on non-catalogued applications; (iii) products that are new, unused or show signs of normal wear but not defective; (iv) products which have been misused, modified, altered, improperly applied or installed; (v) product damaged in an accident or by fire, weather, or any other force majeure event or hazard; (vi) products which have been installed on vehicles used for commercial, fleet, Governmental or racing purposes or damaged due to vehicle modifications; (vii) obsolete parts no longer available from DRiV; (viii) product that has been transferred from the vehicle on which it was originally installed; (ix) non-geniune DRiV branded product or competitive parts; and (x) products installed on vehicles that have been modified outside the specifications of the vehicle’s original equipment manufacturer, including but not limited to aftermarket modifications for racing, off-road, or powersports purposes.

    DRiV will not accept any returns and is not responsible for any claims related to circumstances and products described in the preceding sentence. All warranties, express or implied, are disclaimed if not stated herein. Any implied warranties you may have under state law are limited to the same duration and other terms as this warranty to the extent permissible.

    DRiV will contact warranty-serviced consumers to conduct customer satisfaction surveys relating to product and warranty service. Survey activity will provide valuable feedback and help measure the level of consumer satisfaction in different markets.

    Shipping Info

    Free Shipping on most orders to the lower 48 U.S. states. Truck freight items (over 100 lbs) and custom orders require a separate shipping quote.

    • Applies to items like axles, leaf springs, and long-travel kits.
    • No international shipping on freight items — only to U.S.-based freight forwarders.
    • Worldwide shipping available: Canada, Europe, UAE, Australia, and most of Asia.

    Contact us for an international shipping quote.

    Returns & Exchanges

    30-Day Return Policy — Items must be new, unused, uninstalled, and include all original hardware.

    • No restocking fees for exchanges or gift card credit.
    • 10% restocking fee on refunds, returns cost us real money, so the 10% helps keep the lights on.
    • Installed, damaged, or dirty parts cannot be returned.
    • Any returns missing hardware or miscellaneous items, the return will be denied and returned to the buyer at the buyer's expense.

    Need help? Use Live Chat or Email Us anytime.

    Start a Return or Exchange

    Return Shipping Responsibility

    CHECKOUT+ Package and Order Protection plan provides prepaid return labels for any returned packages, this fee varies by product.

    • Our mistake (misboxed, wrong item, damaged): We cover the cost of return shipping.
    • Buyer mistake (wrong item ordered, fitment error, changed mind): Return shipping is the buyer's responsibility - unless CHECKOUT+ Package Protection has been purchased.

    • Under 50 lbs: Discounted carrier rate
    • Over 50 lbs: Discounted carrier rate + $25 oversize fee

    Refunds

    Refunds are issued within 5–7 business days of receiving your return.

    • Funds typically post to your account in 1–3 business days depending on your payment method.
    • There is a 10% restocking fee on all refunds. We don’t get our original shipping, labor, or transaction fees back — so the 10% restocking fee keeps the lights on.
    • You will receive an email once your refund is processed.

    International Orders

    • All international orders are final sale.
    • Returns via freight forwarders only accepted if the product hasn’t left the U.S.
    • Import taxes, duties, and other possible import-related fees are the buyer’s responsibility and not included in our shipping charges.
    • We are not responsible for goods once exported outside the U.S.

    Product Details

    Whether you want to upgrade, add a reservoir, or find something more affordable, contact us with any questions!

    Part Numbers & Details

    View full product specifications

    Close specs
    Part Numbers & Details
    1 Shock Absorber
    Package contains a single shock.
    Monroe Limited Lifetime Warranty
    Manufacturer provided lifetime warranty and exclusive Feel the Difference Guarantee.
    Factory Hardware for Installation
    All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation.
    Designed for Trucks and Vans
    Engineered for hardworking full-size trucks and vans and features full-displaced valving on compression cycles to deliver controlled ride and handling
    Heavy Duty Build
    Heavy-duty nitrocarburized rod (non-dust shield units only) and sintered iron piston enhance durability for longer service life while self-lubricating fluid seal reduces friction against piston rod to reduce wear
    Nitrogen gas charge
    Maintains tire-to-road contact for improved ride and handling by reducing aeration and shock fade
    Specifications
    Part NumberItemQuantityExtended LengthCompressed LengthTravelTop MountBottom Mount
    66653Shock Absorber123.25"13.96"9.29"OEMEYELET
    Product Details

    Designed for midsize and full-size trucks and vans, Monroe Gas-Magnum shock absorbers provide firm control without a harsh ride. With up to twice the fluid capacity of standard 1-in. bore shocks, they work more efficiently with less effort.

    Compatibility List
    YearMakeModelDrivePosition
    1995ChevroletW4500 TiltmasterFront
    1994ChevroletW4500 TiltmasterFront
    1993ChevroletW4500 TiltmasterFront
    1992ChevroletW4500 TiltmasterFront
    2009GMCW4500 ForwardFront
    2008GMCW4500 ForwardFront
    2008GMCW4500 ForwardFront
    2007GMCW4500 ForwardFront
    2007GMCW4500 ForwardFront
    2006GMCW4500 ForwardFront
    2006GMCW4500 ForwardFront
    2005GMCW4500 ForwardFront
    2005GMCW4500 ForwardFront
    2004GMCW4500 ForwardFront
    2004GMCW4500 ForwardFront
    2003GMCW4500 ForwardFront
    2003GMCW4500 ForwardFront
    2002GMCW4500 ForwardFront
    2001GMCW4500 ForwardFront
    2000GMCW4500 ForwardFront
    2009GMCW5500 ForwardFront
    2008GMCW5500 ForwardFront
    2008GMCW5500 ForwardFront
    2007GMCW5500 ForwardFront
    2007GMCW5500 ForwardFront
    2006GMCW5500 ForwardFront
    2006GMCW5500 ForwardFront
    2005GMCW5500 ForwardFront
    2005GMCW5500 ForwardFront
    2004GMCW5500 ForwardFront
    2004GMCW5500 ForwardFront
    2003GMCW5500 ForwardFront
    2003GMCW5500 ForwardFront
    2002GMCW5500 ForwardFront
    2001GMCW5500 ForwardFront
    2000GMCW5500 ForwardFront
    2018IsuzuNPRFront
    2017IsuzuNPRFront
    2016IsuzuNPRFront
    2015IsuzuNPRFront
    2014IsuzuNPRFront
    2013IsuzuNPRFront
    2012IsuzuNPRFront
    2011IsuzuNPRFront
    2010IsuzuNPRFront
    2009IsuzuNPRFront
    2008IsuzuNPRFront
    2007IsuzuNPRFront
    2006IsuzuNPRFront
    2005IsuzuNPRFront
    2004IsuzuNPRFront
    2003IsuzuNPRFront
    2002IsuzuNPRFront
    2001IsuzuNPRFront
    2000IsuzuNPRFront
    1999IsuzuNPRFront
    1998IsuzuNPRFront
    1997IsuzuNPRFront
    1996IsuzuNPRFront
    1995IsuzuNPRFront
    1994IsuzuNPRFront
    1993IsuzuNPRFront
    1992IsuzuNPRFront
    1991IsuzuNPRFront
    1990IsuzuNPRFront
    1989IsuzuNPRFront
    1988IsuzuNPRFront
    1987IsuzuNPRFront
    1986IsuzuNPRFront
    2019IsuzuNQRFront
    2018IsuzuNQRFront
    2017IsuzuNQRFront
    2016IsuzuNQRFront
    2015IsuzuNQRFront
    2014IsuzuNQRFront
    2013IsuzuNQRFront
    2012IsuzuNQRFront
    2011IsuzuNQRFront
    2010IsuzuNQRFront
    2009IsuzuNQRFront
    2008IsuzuNQRFront
    2007IsuzuNQRFront
    2006IsuzuNQRFront
    2005IsuzuNQRFront
    2004IsuzuNQRFront
    2003IsuzuNQRFront
    2002IsuzuNQRFront
    2001IsuzuNQRFront
    2000IsuzuNQRFront
    2019IsuzuNRRFront
    2018IsuzuNRRFront
    2017IsuzuNRRFront
    2016IsuzuNRRFront
    2015IsuzuNRRFront
    2014IsuzuNRRFront
    2013IsuzuNRRFront
    2012IsuzuNRRFront
    2011IsuzuNRRFront
    2010IsuzuNRRFront
    2009IsuzuNRRFront
    2008IsuzuNRRFront
    2007IsuzuNRRFront
    2006IsuzuNRRFront
    2005IsuzuNRRFront
    2018Peterbilt389Rear
    2003Ud1200Front
    2002Ud1200Front
    2001Ud1200Front
    2000Ud1200Front
    1999Ud1200Front
    2007Ud1300Front
    2006Ud1300Front
    2005Ud1300Front
    2010Ud1400Front
    2009Ud1400Front
    2008Ud1400Front
    2007Ud1400Front
    2006Ud1400Front
    2005Ud1400Front
    2004Ud1400Front
    2003Ud1400Front
    2002Ud1400Front
    2001Ud1400Front
    2000Ud1400Front
    1999Ud1400Front
    1998Ud1400Front
    1997Ud1400Front
    1996Ud1400Front
    1995Ud1400Front
    1994Ud1400Front
    Warranty

    View warranty coverage

    Close specs

    Monroe Manufacturer's Warranty

    DRiV warrants qualifying Monroe products against defects and wear-out when used on private passenger cars and light trucks under normal operating conditions, for as long as such original purchaser owns the vehicle on which they were originally installed.

    Qualifying Products

  • Monroe OESpectrum shocks and struts
  • Monroe Reflex shocks and struts
  • Monroe Quick-Strut assembly
  • Monroe Gas-Magnum shocks
  • Monroe Magnum loaded strut assembly
  • DRiV's obligation under this warranty is limited to replacement of the worn-out or defective product in accordance with this warranty. Cost of removal and installation are not included, and any incidental and consequential damages are excluded under this warranty, regardless of when the failure occurs. This warranty has no cash value.

    To make a claim under this warranty, return the worn-out or defective product with the dated original receipt to the dealer or retailer from whom it was purchased.

    This warranty does not apply to purchases made through unauthorized retailers/dealers including unauthorized online sellers. DRiV has no way to confirm the authenticity and quality of products sold through unauthorized resellers and is not obligated to honor warranty claims when purchased from an unauthorized individual, unauthorized retailer/dealer, or unauthorized online retailer. Purchases made through auction sites, marketplaces, private or third-party sales, or other unauthorized online retailers are not eligible for warranty.

    This warranty does not apply to: (i) any other costs, including costs of removal, installation, diagnostic time, and any other expenses arising out of replacing the product (ii) products which have been installed on non-catalogued applications; (iii) products that are new, unused or show signs of normal wear but not defective; (iv) products which have been misused, modified, altered, improperly applied or installed; (v) product damaged in an accident or by fire, weather, or any other force majeure event or hazard; (vi) products which have been installed on vehicles used for commercial, fleet, Governmental or racing purposes or damaged due to vehicle modifications; (vii) obsolete parts no longer available from DRiV; (viii) product that has been transferred from the vehicle on which it was originally installed; (ix) non-geniune DRiV branded product or competitive parts; and (x) products installed on vehicles that have been modified outside the specifications of the vehicle’s original equipment manufacturer, including but not limited to aftermarket modifications for racing, off-road, or powersports purposes.

    DRiV will not accept any returns and is not responsible for any claims related to circumstances and products described in the preceding sentence. All warranties, express or implied, are disclaimed if not stated herein. Any implied warranties you may have under state law are limited to the same duration and other terms as this warranty to the extent permissible.

    DRiV will contact warranty-serviced consumers to conduct customer satisfaction surveys relating to product and warranty service. Survey activity will provide valuable feedback and help measure the level of consumer satisfaction in different markets.

    Shipping & Returns

    Free shipping within the lower 48 United States

    Close specs

    Shipping Info

    Free Shipping on most orders to the lower 48 U.S. states. Truck freight items (over 100 lbs) and custom orders require a separate shipping quote.

    • Applies to items like axles, leaf springs, and long-travel kits.
    • No international shipping on freight items — only to U.S.-based freight forwarders.
    • Worldwide shipping available: Canada, Europe, UAE, Australia, and most of Asia.

    Contact us for an international shipping quote.

    Returns & Exchanges

    30-Day Return Policy — Items must be new, unused, uninstalled, and include all original hardware.

    • No restocking fees for exchanges or gift card credit.
    • 10% restocking fee on refunds, returns cost us real money, so the 10% helps keep the lights on.
    • Installed, damaged, or dirty parts cannot be returned.
    • Any returns missing hardware or miscellaneous items, the return will be denied and returned to the buyer at the buyer's expense.

    Need help? Use Live Chat or Email Us anytime.

    Start a Return or Exchange

    Return Shipping Responsibility

    CHECKOUT+ Package and Order Protection plan provides prepaid return labels for any returned packages, this fee varies by product.

    • Our mistake (misboxed, wrong item, damaged): We cover the cost of return shipping.
    • Buyer mistake (wrong item ordered, fitment error, changed mind): Return shipping is the buyer's responsibility - unless CHECKOUT+ Package Protection has been purchased.

    • Under 50 lbs: Discounted carrier rate
    • Over 50 lbs: Discounted carrier rate + $25 oversize fee

    Refunds

    Refunds are issued within 5–7 business days of receiving your return.

    • Funds typically post to your account in 1–3 business days depending on your payment method.
    • There is a 10% restocking fee on all refunds. We don’t get our original shipping, labor, or transaction fees back — so the 10% restocking fee keeps the lights on.
    • You will receive an email once your refund is processed.

    International Orders

    • All international orders are final sale.
    • Returns via freight forwarders only accepted if the product hasn’t left the U.S.
    • Import taxes, duties, and other possible import-related fees are the buyer’s responsibility and not included in our shipping charges.
    • We are not responsible for goods once exported outside the U.S.