KYB Suspension Shock Absorber KG5551
KYB Suspension Shock Absorber KG5551

KYB Suspension Shock Absorber P/N:KG5551

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$61.99
MPN: KG5551
UPC: 781552055518
Item Package Quantity: 1
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KYB Suspension Shock Absorber P/N:KG5551
KYB Suspension Shock Absorber P/N:KG5551
$61.99

Bring firm, fade-free rear control to your classic Ford with the KYB shock absorber KG5551, a Gas-a-just high-pressure monotube gas shock that installs as a direct-fit rear replacement for the 1978-1981 Ford Fairmont, 1979-1993 Ford Mustang, 1979-1981 and 1983-1986 Mercury Capri, and 1978-1981 Mercury Zephyr. Its components and valving are designed specifically for classic Ford cars.

  • High-pressure monotube design: separates the gas and oil for fade-free operation and instant response, unlike a traditional twin-tube that can fade due to aeration.
  • Two working chambers: an air-free hydraulic piston and valve area for responsiveness and control, plus a high-pressure nitrogen gas area with a floating piston for a comfortable ride during normal driving.
  • Up to 25% more damping: adds up to 25% more damping performance over original equipment shocks, with extra damping for vehicles that work, tow, or run larger, heavier tires and wheels.
  • Triple chrome-plated piston rod: since fluid leaking can cause shock failure, the ultra-smooth rod is designed to reduce seal wear.

The higher gas pressure is designed to improve steering response, and KYB notes the Gas-a-just helps keep electronic safety systems performing as intended. Replace the rear shocks as a pair for balanced control.

Interchange: 75755 · 5845

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

75755, 5845

Frequently Asked Questions

Will the KYB gas shock absorber KG5551 fit my vehicle?

It is a direct-fit rear replacement for the 1978-1981 Ford Fairmont, 1979-1993 Ford Mustang, 1979-1981 and 1983-1986 Mercury Capri, and 1978-1981 Mercury Zephyr. Check the Buyer's Guide tab to confirm.

Is this a front or rear shock absorber?

This is a rear shock absorber. For balanced control, it's best to replace both rear shocks together as a matched pair.

What makes the Gas-a-just monotube different from a twin-tube shock?

Its high-pressure monotube design separates the gas and oil in two working chambers, giving fade-free operation and instant response instead of the fade a twin-tube can suffer from aeration.

Does it help with towing or heavier tires and wheels?

Gas-a-just monotubes add damping over the OE design for vehicles that work, tow, or run larger, heavier tires and wheels, providing up to 25% more damping than original equipment shocks.

What part numbers does the KG5551 replace?

It cross-references to interchange numbers 75755 and 5845. Match your original number and confirm fitment on the Buyer's Guide tab before ordering.

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