Rear Shock Absorber for 2024-2025 Chevrolet LCF 3500HG & More - Monroe 66618

$60.99

Monroe Shocks & Struts Suspension Shock Absorber 66618

Part number: 66618

UPC: 048598074737

Condition: New

Weight: 5.20 LBS

Item Package Quantity: 1

$60.99

Current Stock: 157

Quantity:

Adding to cart… The item has been added

Have questions?

Ask an Expert

Monroe Shocks & Struts Suspension Shock Absorber P/N:66618

$60.99

Description

Keep your hardworking commercial truck riding under control with the Monroe Magnum Rear Suspension Shock Absorber (MPN 66618). This gas-charged rear unit is built for class 3-6 vehicles and fits many of them, among them the 2024-2025 Chevrolet LCF 3500HG, 2016-2024 Chevrolet LCF 4500 and 2017-2024 Chevrolet LCF 4500HD. See the "Vehicles it fits" section for the full list of Chevrolet, GMC and Isuzu applications.

Nitrogen gas-charge: Helps maintain tire-to-road contact and reduce aeration and shock fade for a more stable ride.
10-stage valving: Tuned specifically to each vehicle, with a larger 1-3/8 in. bore for more efficient damping control on most applications.
All-weather fluid: Special additives assist in extreme temperatures and help reduce oil breakdown, while a 2 in. or 2-1/4 in. reserve tube holds more fluid.
Durable build: Shouldered and bonded bushing with sleeve protects against bushing walkout, arc welds up to 360°, plus a PTFE-coated bearing and nitrocarburized piston rod on most applications.

A robust hydraulic lock-out on most applications helps prevent over-extension, piston top-out and seal damage. Designed for high-mileage, severe-use trucks and buses, it helps reduce excessive vibration when a worn shock is the cause. Sold individually; replacing both rear shocks as a matched pair is recommended for balanced ride control. Backed by Monroe's 90-day Risk Free Ride Offer and Limited Commercial Warranty.

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

Buyer's Q&A

Frequently Asked Questions

What is part number 66618 and where does it mount?

It's a Monroe Magnum gas-charged shock absorber that mounts in the rear suspension position, helping damp movement and control ride on the listed class 3-6 commercial trucks and buses.

Which vehicles does this shock fit?

It fits many vehicles, among them the 2024-2025 Chevrolet LCF 3500HG, 2016-2024 Chevrolet LCF 4500 and 2017-2024 Chevrolet LCF 4500HD. See the "Vehicles it fits" section for the full list.

Should I replace both rear shocks at the same time?

This shock is sold individually. Replacing both rear shocks together as a matched pair is recommended so the rear axle damps evenly for balanced, consistent ride control.

What makes the Magnum suited to commercial use?

It's nitrogen gas-charged and designed for the demands of high-mileage, severe-use class 3-6 trucks and buses, with all-weather fluid and 10-stage valving tuned to each vehicle.

What are signs my rear shock may need replacing?

Excessive vibration, poor ride control, bouncing, or fluid leakage can indicate a worn shock. Have the cause diagnosed, since these symptoms can have other sources; if the shock is the cause, this replaces it.