Allis Chalmers D10 Tractor Parts - Yesterday's Tractors. For models with a 2 1/2 inch hood hole, the hole must be enlarged. For tractor models B, C, CA, RC, D10, D12, D14, (D15 serial number up to 9001). (Part No: R4935) $142.14. Manifold - Fits Allis-Chalmers D10 (after serial number 3501) and D12 (after serial number 3001). It … Learn More