This a Genuine GM OEM oil pan (not aftermarket) that has been machine reconditioned to be LIKE NEW for the 2WD 4.3L engine equipped in the Chevrolet & GMC S10 Blazer, Jimmy, Express & Savna Vans, Sierra & Silverado 1500 Pickups, S10, S15, SonomaNOTE - Your old pan should have 12559523 cast on the outside just like the pictureNOTE - This pan is for applications that do NOT utilize a low oil level sensorPART NUMBER - 12559517CASTING NUMBER - 12559523Ships with new drain plugFits the following Make/Model:BLAZER S10/JIMMY S15 96-05 4x2EXPRESS 1500 VAN 96-07 4.3LEXPRESS 2500 VAN 96-05 4.3LEXPRESS 3500 VAN 96-02 4.3LISUZU HOMBRE 97-00 4x2S10/S15/SONOMA 96-03 4x2SAVANA 1500 VAN 96-07 4.3LSAVANA 2500 VAN 96-05 4.3LSAVANA 3500 VAN 01-02 4.3LSAVANA 3500 VAN 96-00 4.3LSIERRA 1500 PICKUP 04-06 4.3LSIERRA 1500 PICKUP 07 classic style (creased door skin), 4.3LSILVERADO 1500 PICKUP 04-06 4.3LSILVERADO 1500 PICKUP 07 classic style (creased door skin), 4.3L