321R Manifold Gasket Set Fits John Deere Fits JD Tractor B B BN BN BW BW BWH BWHOne New Aftermarket Replacement Manifold Gasket Set Fits John Deere (Fits JD) B Series Tractors This aftermarket replacement manifold gasket set seals the intake and exhaust manifold on Fits John Deere B, BN, BNH, BW, and BWH tractors. Designed to prevent exhaust leaks and restore proper manifold sealing on classic two cylinder Fits John Deere (Fits JD) engines, this set is a direct replacement for OEM part numbers 321R and B1787R. Compatible Models