Intake & Exhaust Valve Compatible With 2000-2010 John Deere 9750Sts/9860Sts/9770Sts 6125 12.5L 6-Cyl

JOHN DEERE TRACTORS:
• John Deere 9400/9400T/9300/9300T 6125 12.5L Diesel (1996-2002)
• John Deere 9420/9420T/9520/9520T/9620/9620T 6125 12.5L Diesel (2002-2007)

JOHN DEERE COMBINES:
• John Deere 9750STS/9860STS/9770STS 6125 12.5L Diesel (2000-2010)


IMPORTANT:
This is a DUAL-PURPOSE valve that fits BOTH intake AND exhaust positions on John Deere 6125 engines (12.5L, 6-cylinder, PowerTech). One valve for both positions simplifies ordering — you need 12 total valves per engine (6 intake + 6 exhaust, 2-valve-per-cylinder design). Do NOT confuse with 6135 (13.5L) engine valves (R518328) — the 6125 and 6135 are different engines and their valves are NOT interchangeable.

Fits 9000-series tractors (9300/9400/9300T/9400T 1996-2002, 9420/9520/9620 2002-2007) and 9750STS/9860STS/9770STS combines. When replacing, inspect valve guides for wear and valve seats for pitting or recession. Replace valve stem seals. Check spring free length and installed pressure. Measure valve protrusion after installation. These high-hour engines commonly develop valve seat recession — if protrusion exceeds service limits, seats must be recut or replaced.

⚠️ Fits BOTH intake and exhaust. Confirm engine is 6125 (12.5L) — not 6135 (13.5L).