PART NO. A-70229911. Guide, Exhaust Valve. MODELS: 175 CID Diesel Allis-Chalmers TRACTOR: D15 (ENG SN < 119504) 201 CID Gas Allis-Chalmers TRACTOR: WC Allis-Chalmers TRACTOR: WD Allis-Chalmers TRACTOR: WF Allis-Chalmers TRACTOR: W25 226 CID Gas Allis-Chalmers TRACTOR: D17 (GAS) Allis-Chalmers TRACTOR: WD45 Allis-Chalmers TRACTOR: 170 (GAS) Allis-Chalmers TRACTOR: 175 (GAS) . Pk size: 4.