1994-04 1994-04 Chev/Gm 6.5L TurboDiesel Injection Pump, Stanadyne DS4831-5521, 12561307 Posted on June 28, 2024 by admin For Auto trans Only. 94 -04 6.5L turbo diesels. No core charge hassle! Genuine Stanadyne, from the father country of USA! 1994-04 chevgm ds4831-5521 injection pump stanadyne turbodiesel