PART NO. A-70255318. Gasket Set, Upper. Allis-Chalmers TRACTOR: D17 (GAS) Allis-Chalmers TRACTOR: WC Allis-Chalmers TRACTOR: WD Allis-Chalmers TRACTOR: WD45 Allis-Chalmers TRACTOR: WF Allis-Chalmers TRACTOR: W25 Allis-Chalmers TRACTOR: 170 (GAS) Allis-Chalmers TRACTOR: 175 (GAS). MODELS: Allis-Chalmers TRACTOR: D17 (GAS) Allis-Chalmers TRACTOR: WC Allis-Chalmers TRACTOR: WD Allis-Chalmers TRACTOR: WD45 Allis-Chalmers TRACTOR: WF Allis-Chalmers TRACTOR: W25 Allis-Chalmers TRACTOR: 170 (GAS) Allis-Chalmers TRACTOR: 175 (GAS) . Pk size: 1.