Monroe Shocks & Struts Suspension Shock Absorber P/N:66440

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$62.99
MPN: 66440
Item Package Quantity: 1
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Monroe Shocks & Struts Suspension Shock Absorber P/N:66440
Monroe Shocks & Struts Suspension Shock Absorber P/N:66440
$62.99

Smooth out the ride and keep worn dampers in check with the Monroe Magnum Rear Suspension Shock Absorber 66440, a gas-charged unit built for the demands of high-mileage, severe-use class 3-6 vehicles. It installs as a direct-fit replacement for the listed applications, including the 2014-2025 RAM ProMaster 2500 and 2014-2025 RAM ProMaster 3500, plus a wide range of motorhome and camper-van builds on that chassis — 2014-2023 Winnebago Travato, 2020-2023 Winnebago Solis, 2020-2024 Thor Motor Coach Tellaro, 2021-2023 Roadtrek Chase, 2017-2019 Hymer Aktiv and Hymer Aktiv 2.0, 2018-2023 Fleetwood Irok, 2023-2025 Airstream Rangeline and more. See the Buyer's Guide tab for the full application and engine list.

  • Gas-charged design: Nitrogen gas-charge helps maintain tire-to-road contact by reducing aeration and shock fade for quicker response and a more stable, comfortable ride.
  • All-weather fluid: Special additives assist with extreme temperatures and help reduce oil breakdown, while the 2-in. or 2-1/4-in. reserve tube holds more fluid when required.
  • 10-Stage valving: Tuned to the vehicle and paired with a larger 1-3/8-in. bore for more efficient damping control on most applications.
  • Built durable: Shouldered and bonded bushing with sleeve guards against bushing walkout, with arc welds up to 360°.

Backed by Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.

Interchange: HD12140552 · 68157782AC · 68157782AD · 68157782AE · F347086 · 3450007 · 170258 · 53301641 · 12140672

This part cross-references / interchanges with the following part numbers:

HD12140552, 68157782AC, 68157782AD, 68157782AE, F347086, 3450007, 66440, 170258, 53301641, 12140672

Frequently Asked Questions

What position does this shock absorber fit?

It is cataloged as a rear suspension shock absorber for the listed applications. Check the Buyer's Guide tab to confirm the correct fitment for your vehicle.

Does this fit my RAM ProMaster?

It is listed for the 2014-2025 RAM ProMaster 2500 and 2014-2025 RAM ProMaster 3500, along with many motorhome builds on that chassis. See the Buyer's Guide tab for the full list.

What are signs my shock may need replacing?

Excessive bounce, poor ride control, bottoming out, or added vibration can be signs a worn shock may need replacing. Have the cause diagnosed, as other components can produce similar symptoms.

Is this a gas-charged shock?

Yes. It uses a nitrogen gas-charge that helps maintain tire-to-road contact by reducing aeration and shock fade for a more stable, comfortable ride.

Should I replace shocks in pairs?

This listing is for one shock. Replacing both sides on the same axle together as a matched set is recommended for even, balanced ride control.