Caterpillar 137-5541 Fuel Priming Pump for CAT 3116 3126 C7 C9 - Used

Used Caterpillar hand fuel priming pump, visually identified as CAT 137-5541 (cross-refs 172-6291, Perkins/FG Wilson CH10439 / 996-688). Application: CAT 3116, 3126, C7, C9, C10, C11, C12 and similar industrial and marine diesel engines — manually primes the fuel system after filter changes or fuel starvation. Condition: used take-off, clean and complete with knurled lock cap and O-ring in place; not bench-tested. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.