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Prothane 6-804 Rear Frame Leaf Spring Shackle Bushing Kit

(1973-1979 Ford F-150; 1977-1979 Ford F-350 Super Duty; 1973-1979 Ford F-250; 1978-1979 Ford Bronco; 1977-1979 Ford F-350; 1973-1979 Ford F-100 + 3 more models)

Part of: Prothane Frame Shackle Bushing Kit

Other options in this family: Prothane 1-802BL Prothane 1-801 Prothane 1-802 Prothane 6-803-BL Prothane 7-801

Manufacturer

Picture for manufacturer Prothane

Part Number

6-804
5 reviews
Sale Price

$15.29

Estimated ship date Wednesday, January 13

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Product Details

The Prothane 6-804 is a polyurethane rear frame leaf spring shackle bushing kit designed as a direct replacement for worn or deteriorated factory rubber bushings. Engineered for improved durability and chassis performance, these bushings restore proper suspension geometry and reduce unwanted flex in the rear leaf spring shackle assembly.

Prothane's proprietary polyurethane compound outperforms OEM rubber bushings by resisting compression set, oil, ozone, and UV degradation — delivering a firmer, more responsive ride with improved handling feedback and longer service life. Each bushing is molded to precise OEM dimensions for a straightforward, drop-in installation.

Key Features:

  • Made from high-performance polyurethane for superior durability over factory rubber
  • Resists oil, ozone, UV exposure, and compression set
  • Restores proper rear suspension geometry and reduces spring shackle play
  • Direct OEM replacement — no modifications required for installation
  • Includes grease fitting ports for easy lubrication and long-term serviceability
  • Available in classic Prothane red polyurethane

The Prothane 6-804 shackle bushing kit is an ideal upgrade for restoring or refreshing the rear suspension on applicable 1973–1979 Ford vehicles, providing lasting performance that outlasts conventional rubber replacements.

Products specifications

Fits

1973-1979 Ford F-150; 1977-1979 Ford F-350 Super Duty; 1973-1979 Ford F-250; 1978-1979 Ford Bronco; 1977-1979 Ford F-350; 1973-1979 Ford F-100; 1973-1979 Ford F-250 Pickup; 1979 Ford F-350 Pickup; 1973-1979 Ford F100 Pickup

Prop 65

No

Just hoping this is the right rebuild kit for my truck since it was built in Canada

All seems correct and quick... good communication

would have been nice if you had the baffles for the pipes.

Autoplicity made finding and ordering my parts simple and easy! Not only did they have the parts in stock and ready to ship, but they were also the cheapest BY FAR saving me nearly 30%!<br><br>The information that they had on the product pages was 100% accurate unlike other car part websites.<br><br>Autoplicity has made a customer for life!

I was searching for a CAI for my ford fusion and found it on their web site. Great customer service, and super fast delivery! Thank you again for everything.

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