Description:

NOS 1966-1982 GM OLDSMOBILE CHEVROLET CORVAIR BUICK PONTIAC CORVETTE CAMARO Saginaw 3 & 4 speed transmission counter shaft

GM 3859005 fits nearly all Saginaw 3‑ and 4‑speed manual transmissions used in GM vehicles from 1966–1987, including:

Chevrolet

• Camaro

• Chevelle / Malibu

• Nova

• Corvette

• Corvair

• Full‑size Chevy

• Chevy/GMC trucks

• Astro van (early years)

Pontiac, Buick, Oldsmobile

• Many 1960s–1980s models equipped with Saginaw manual transmissions

• Includes A‑body, X‑body, and F‑body variants

General Fitment Notes

• Fits 1966–1987 Saginaw-equipped cars & trucks

• Works in both 3‑speed and 4‑speed versions

• Often listed as a cluster shaft or countershaft pin

📐 Specifications

• Overall Length: ~9.56" (per WT301‑3 replacement spec)

• Diameter: ~0.953"

• Direct replacement for GM 3859005

GM PART NUMBER 3859005

NOTE - PROBABLY HAVE NOS ALSO

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