- Excellent Quality Reproduction
- Off-white body with green cap
- Correct lettering on top of cap
- Fits 3/8″ Hole
- Replaces original GM part # 1171317, 1236317, 3820840 & 8640496
- Made in USA
The color of the cap on the rear end ventilation breather tube changed from white to green in July of 1973. However, it will work for all GM 10 & 12-bolt rears in Chevelle, El Camino, Impala, Bel Air, Biscayne, Caprice, Chevy II & Nova from 1962-81.