Monroe 66878 | Suspension Shock Absorber

Part Number

66878

Magnum Shock Absorber

Fits: 60-62 Chevrolet C50, 60-62 Chevrolet C60, 60-61 Chevrolet C70, 68-89 Chevrolet C50, 68-89 Chevrolet C60, 79-89 Chevrolet C70, 80-89 GMC C5000, 80-89 GMC C6000, 80-89 GMC C7000, 81-20 Kenworth W900, 86-08 Kenworth T600A, 87-89 Chevrolet S7, 87-20 Kenworth T800, 93-05 Kenworth K300, 95-08 Kenworth T300, 95-05 Peterbilt 330, 07-20 Peterbilt 330, 07 Peterbilt 220, 08-18 Kenworth T170, 08-15 Peterbilt 210, 08-18 Peterbilt 389, 10 Peterbilt 220, 10-20 Kenworth T400, 10-18 Peterbilt 348, 13-20 Peterbilt 220, 11-18 Peterbilt 337, 11-18 Peterbilt 587, 12-20 Western Star 4700SB, 12-20 Western Star 4700SF, 13-22 Kenworth K270, 13-22 Kenworth K370, 13-20 Kenworth T680, 13-20 Peterbilt 579, 14-20 Kenworth T880, 16-19 Kenworth T370, 17-20 Peterbilt 520

Special Price $43.44 Regular Price $51.11

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In stock

Estimated Ship Date: 1 Business Day or Less

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Details

The Monroe® Magnum™ shock absorber for class 3-6 Vehicles is gas-charged for quicker response and a stable, more comfortable ride. Replacing worn-out units with hard-working Magnum™ shocks can help reduce excessive vibration. The result can be better tire life, less downtime and a lower cost per mile.

BRAND: Monroe Shocks & Struts

FEATURES:

2020-2012 Western Star 4700 Rear, 2018-2012 Western Star 4700SB Rear, 2018-2012 Western Star 4700SF Rear, 1998 Western Star 4842F Front, 1998 Western Star 4842S Front, 1998 Western Star 4864F Front, 1998 Western Star 4864S Front
1-3/8-inch (35 mm) bore: Larger bore than most shocks to provide more efficient and consistent control - on most applications
Monroe Shocks & Struts Magnum 66878 Shock Absorber
2-inch (50.8 mm) or 2-1/4-inch (57.2 mm) reserve tube: More fluid for more consistent performance - when required
Magnum Shock Absorber
.05-inch Pressure tube withstanding pressure of 9KPSI
10-stage valving: Reacts to wide range of driving conditions - on most applications
Nitrogen gas-charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration - on most applications
Magnum Shock Absorber
Loop welding technique: Resistance weld with additional 360-degree weld provide up to 13,100 lbs. (6,395 kg) tensile strength for maximum durability - when required
PTFE coated bearing: Reduces friction during operation between the rod and rod guide, improving durability - on most applications
Robust hydraulic lock-out: Prevents over-extension of the suspension, top-out of the piston and averts damage to the seal assembly - on most applications
Tenneco shouldered bushings: Shouldered bushing and bonded bushing with sleeve designs prevent (bushing walkout) for improved quality and durability - on most applications

SPECIFICS:

Compressed Bumper Stop	No
Compressed Length	14.5625
Dust Shield	Yes
Dust Shield Included	Yes
Dust Shield Material	Metal
Extended Bumper Stop	No
Extended Hydraulic Lockout	No
Extended Length	23.9063
Lower Mounting Code	LS54
Lower Mounting Description	Loop Bushing & Sleeve Mount - 3/4" Sleeve ID X 1.3/4" Sleeve OAL
Parts Pack	None
Travel Length	9.3430
Upper Mounting Code	LS54
Upper Mounting Description	Loop Bushing & Sleeve Mount - 3/4" Sleeve ID X 1.3/4" Sleeve OAL

DOWNLOADS:

INTERCHANGE:

General Motors: 5549599
Chevrolet: 5534401
General Motors: 5534427
General Motors: 3919910
PAI Industries: HSA5080
General Motors: 5552115
Kenworth: 5533699
General Motors: 4940653
Gabriel: 83321
General Motors: 22012096
Mack: 660157MT
Mack: 14QK2100
Monroe Vintage: 600157
Chevrolet: 4975510
General Motors: 4975510
Sachs: 316320
Chevrolet: 5398598
VOLVO / WHITE / GMC: 3919910
Mack: 14QK2100P1
General Motors: 5534401
General Motors: 22012169
Chevrolet: 3919910
OEM: 1672501
Fruehauf: UEY11241
Neway: 57366878
Chevrolet: 5534427
Monroe Vintage: 601157
General Motors: 4790218
ACDelco: 55077
KYB: KG6002A
Neway: OE10219
Motorcraft: CAX878
Reyco Granning: 1672501
Chevrolet: 5552115
General Motors: 3192891
International: AMS660157
Koni: 881422
Monroe Vintage: OE10219
Western Star: 373013412
Monroe Vintage: 661157
Chevrolet: 3192891
Monroe Vintage: 6878
General Motors: 22012196
General Motors: 5398598
Mack: 600157MT
Mack: 25621798
Chevrolet: 22012169
Gabriel: 83221
Fruehauf: UEY1124001
Neway: 57306878
Monroe Vintage: 660157
Chevrolet: 22012096
General Motors: 3192892
International: AMS600157
Chevrolet: 22012196
Chevrolet: 3192892
Chevrolet: 5549599
Chevrolet: 4790218
Kenworth: 1672501
Chevrolet: 4940653

Product Questions (4)

Customer Questions

How often should shock absorbers be replaced?

Shock absorbers should generally be replaced every 50,000 miles or every 5-7 years

How to replace shock absorbers?

To replace shock absorbers, you need to remove the wheel and tire assembly, unbolt the old shock absorber, replace it with a new one, and tighten the bolts. Then, reinstall the wheel and tire, and test the new shocks.

Why do shock absorbers leak?

Shock absorbers can leak due to worn seals, damage to the piston or cylinder, or corrosion from exposure to moisture and road salt.

Can shock absorbers be replaced?

Yes, shock absorbers can be replaced when they start to wear out or fail.