Notes: 81236600/NCM73182900 COUNTERPLATE Diff. locking SP. 1.5 is original AGCO-MF-VALTRA product. 81236600/NCM73182900 COUNTERPLATE Diff. locking SP. 1.51 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849