HD Sanden Style Denso - 146mm, 1 Groove Clutch, 12V - Without Manifold Kit EARLY serial numberItem Information Sanden Style Version of Original 6E171 Denso Can Re use Original Manifolds. For Manifold Replacement Kit, Order 451 1173K Can use HD Alternative Denso Compressor 503 1163 Can use OE Style Denso Compressor 503 116 Will Not Fit John Deere Models 2250, 2450, 2650, 2650N, 2850, 2355, 2555, 2755, 2855N, 2955, 3050, 3350, 3650, 3055, 3155, 3255 With John Deere AL63652 Compressor Mounting Bracket Additional Information Serial Number 650400