KYB Suspension Shock Absorber P/N:KG5477
Keep every mile controlled with the KYB Gas-a-just Shock Absorber KG6199, a rear high-pressure monotube gas shock that drops in as a direct-fit replacement for the 1989-1992 Chevrolet W4500 Tiltmaster, 1992-1995 GMC W4500 Forward, and 1986-1995 Isuzu NPR (see the Buyer's Guide tab for engine details). This KYB shock absorber uses a monotube design that separates the nitrogen gas and hydraulic oil so it resists fade and responds instantly, without the aeration that can affect traditional twin-tube shocks.
Worn shocks may show up as excessive bounce, nose dive, or poor body control; if the original rear shock is the cause, this KYB Gas-a-just replaces it. Sold individually; replace both sides as a matched pair for balanced control.
Interchange: 85012 · 66502
This part cross-references / interchanges with the following part numbers:
What is the KYB Gas-a-just KG6199?
It is a rear high-pressure monotube gas shock absorber that separates the nitrogen gas and hydraulic oil for fade-free operation and instant response.
Which vehicles does this KYB shock absorber fit?
It is a direct-fit rear shock for the 1989-1992 Chevrolet W4500 Tiltmaster, 1992-1995 GMC W4500 Forward, and 1986-1995 Isuzu NPR. See the Buyer's Guide tab for engine details.
How does this KYB gas shock absorber differ from a twin-tube shock?
Its monotube design keeps the gas and oil separated, so it resists aeration and fade and can respond quickly compared with traditional twin-tube shocks.
Does it offer more damping than the original shocks?
KYB states the Gas-a-just adds up to 25% more damping performance over original-equipment shocks, with valving designed for heavy-duty trucks that tow and run larger tires.
Do I need to replace both shocks?
This listing is for one shock, sold individually. Replacing both sides on the same axle as a matched pair is recommended for balanced control.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.