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Urethane Differential Mustache Bar Bushing Kit, 70-78 240Z-260Z-280Z

Urethane Differential Mustache Bar Bushing Kit, 70-78 240Z-260Z-280Z
You can choose a Z-Car from your garage, or from the selections above, to filter the store or check part fitment.
Part #:23-4139
Price: $68.87
  • (2) Urethane Mustache Bar Bushing*
  • (2) Bushing Collar

The original bushings under the rear of your Z wear out over time, allowing significant movement and play in the rear geometry of the car. Mustache bar bushings that have worn enough can even allow the differential to move around while driving (although they are not generally the cause of the well-known rear end "clunk"). Upgrading to this urethane kit will not only completely solve all the issues caused by worn-out factory bushings, but it will go even further beyond by greatly improving ride quality and general stability by strongly reducing rear end movement. The improvements are most noticeable at highway speeds, and even brand new OE replacements can't compare against! (Note that OE bushings are no longer available new.) Combine with other urethane bushing upgrades for an even greater improvement!

OE Bushing Removal Note: The outer metal sleeve of the factory rubber bushing (10-2261) is retained for use with the kit. Please call with any questions prior to disassembling your stock bar.

Factory rubber bushings were single piece rubber encased in metal with the collar molded in the center, which was then pressed into the mustache bar. The lower end of the outer sleeve was rolled over the lip of the mustache bar to lock it in place. These were then "capped" with serrated rubber and metal washers on each end. While the design worked well enough when the cars were new, removal of worn out bushings is drastically more difficult while installation of OE replacements requires tools that are rather expensive and hard to find. These urethane upgrades use an improved 2-piece design that replaces both the rubber portion (10-2261) and the serrated washers (10-2270, 10-2271, 10-2272, 10-2273, 10-2274) that simplifies installation without sacrificing any performance. Each package will include a total of 4 bushing halves along with 2 separate collars and 4 large metal washers.

Model Guide:
Datsun 240Z, 260Z, 280Z

Code Guide:
Datsun S30

Year Guide:
1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978

Some parts may not fit every version of every year listed. See product Title & Description for any application breakdowns or customization options, and contact us with any questions.

  • 1970 Datsun 240Z
  • 1971 Datsun 240Z
  • 1972 Datsun 240Z
  • 1973 Datsun 240Z
  • 1974 Datsun 260Z
  • 1975 Datsun 280Z
  • 1976 Datsun 280Z
  • 1977 Datsun 280Z
  • 1978 Datsun 280Z
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