Chalmers models: D17, 170, and 175.
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4 CYL High Compression, Flat Top Piston
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OVERBORE 4" TO 4-1/8"
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flat top high compression
Fits the following makes and models:
Allis-Chalmers TRACTOR: D17 (GAS)
Allis-Chalmers TRACTOR: 170 (GAS)
Allis-Chalmers TRACTOR: 175 (GAS)