R40 and more

312BL — 1997-2000 — Caterpillar 3064

4L 6391cc 390cid 2BBL

2022 — 1991-1995 — 6-830

GD521A (1995-1997 — 6D105 Engine)

Valve Seat for John Deere 7520, 5400, 6030, 770, 644B, 770A+ | R48314 AM349T R40 and moreValve Seat for John Deere (exhaust, std, 45 degree): heavy duty replacement for OEM R48314. Built for reliable field replacement performance. Fits These Models John Deere Tractors 7520, 6030, 8630 John Deere Harvesters 5400, 5460 John Deere Graders 770, 770A, 772A John Deere Wheel Loaders 644B John Deere Compactors 646B John Deere Crawlers 850, 855 John Deere Excavators 890 John Deere Power Units 6619TF, 6619AF John Deere 860B, 762 OEM Cross Reference