This is a A-OL2040 2040 Extended Pitch Offset Link (Drives) PN: OL2040Main Description As Following : A-OL2040 2040 Extended Pitch Offset Link (USA) P.N: OL2040 A-OL2040 2040 Extended Pitch Offset Link (USA) P.N: OL2040 Replaces: SW2040OLUS JOHN DEERE , Crossed From: AHL2040 , , 803-412040 , , 803412040 , Found in Section & Models : Chains/ Sprockets/ Pulleys/ Hubs > Roller Chains and Attachment Links, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : High Quality Afternaket Shipped from Both US and Canada