Motorsport Auto

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Part #:10-2077

Price: $99.87

Includes:

(1) Billet Aluminum Alternator Adjustment Arm
(1) Mounting Hardware Kit
(1) Instructions

Description:
This durable, great looking adjuster arm is the best option to replace the original. The factory leverage-type alternator adjuster arms were made of fairly thin metal, and are prone to bending, cracking, and eventually breaking as a byproduct of their design. The leverage that needs to be applied to the alternator to achieve proper belt tension on the original design ultimately weakens the arm itself over time, and if care isn't taken the alternator itself can be damaged. While the design was typical of the time, better alternatives have since been developed to replace the originals.

Our adjuster arms feature several benefits over the original design, including:

High quality materials for increased durability and strength.
Polished billet center rod and plated heim joints ensure show car quality appearance without sacrificing strength.
Adjustable from 5 5/8" to 7 3/4"
Built-in adjuster nut makes tensioning and loosening simple (only requires single open end/adjustable wrench to adjust).
Twist to adjust design for precision tension adjustment (no risk of over or under tensioning).
Heim Joint at each end provides high strength mounting points.
Double jam nuts fully prevent unwanted changes in adjustment position once tightened.
Includes all installation hardware (with proper hardware for use with heim joints).

*280ZX Note:
The original 280ZX replacement adjusting arm had an additional mounting tab at the outer end of the adjustment side of the bracket (on the top side angled toward the rear), which was used to mount a clamp that supported the lower radiator hose (see diagram on this page for reference). This adjustment arm was originally designed for use with S30 models, which did not use the support clamp. If your 280ZX still has this clamp, you will need to manufacture an alternate mounting solution in order to use it with this adjuster. Note that the clamp has been discontinued by Nissan, and it is not considered functionally critical. See notes on 12-4066 (S30 version) and 12-4063 (280ZX version) for more details on the original adjuster arms.

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

Code Guide:
Datsun S30, S130*

Year Guide:
1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979*, 1980*, 1981*, 1982*, 1983*

Support Independent Z Engineers!
Please support the local independent engineers that bring so many great products to the Z Community. The same Engineer that did the original research to come up with many of the unique items available for your Z-Car, such as our front and rear brake upgrade kits, also brought high quality pieces like these adjustable alternator arms to Z Enthusiasts everywhere. Some unscrupulous individuals have taken these arms & had them copied with inferior components and materials.
This local engineer personally crafts the custom billet center sections himself, right here in Southern California, with materials made in the USA, while the rod ends and hardware are all top quality and specifically sourced for the design as well. Nobody comes close to his design, quality, and accuracy. Support his contribution to the Z Community by buying the originals, so this great asset to all Z Enthusiasts can continue to create great new products for the Z-Car. Thank you.