This NAPA Echlin RR145 distributor cap is a perfect fit for all Allis Chalmers IH Farmall Henry J tractors. It is designed with high-quality materials to ensure durability and long-lasting performance. The cap is compatible with 12 V voltage and has a unit quantity of 1. It is a rotor and contact part type that is essential for the proper functioning of the ignition system. In addition, this product is subject to California Proposition 65, which requires businesses to provide warnings to Californians about significant exposure to chemicals that cause cancer, birth defects, or other reproductive harm. The warning symbol and the word 'warning' will be added before the description you enter here, and we will add 'for more information, go to www.p65warnings.ca.gov' following your description.