Notes: 0.900.0089.0 COUNTERPLATE Diff. locking Female SP. 1. is original SAME-DEUTZ-FAHR product. 0.900.0089.0 COUNTERPLATE Diff. locking Female SP. 1.1 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849