PART NO. A-70206893. Gasket, Head. Allis-Chalmers POWER UNIT: B15 Allis-Chalmers POWER UNIT: IB Allis-Chalmers TRACTOR: B Allis-Chalmers TRACTOR: C Allis-Chalmers TRACTOR: CA Gleaner COMBINE: 60H. MODELS: Allis-Chalmers POWER UNIT: B15 Allis-Chalmers POWER UNIT: IB Allis-Chalmers TRACTOR: B Allis-Chalmers TRACTOR: C Allis-Chalmers TRACTOR: CA Gleaner COMBINE: 60H . Pk size: 1.