Click on image to zoom

12491583 - Remanufactured GM 1991 - 1995 6.0L, 366 CID, 8 Cylinder Engine

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

Availability: Replaced by 12491583
Shipping: FREE 48 State Shipping


4 bolt mains, 1pc rear seal, 10 bolt front cover. Mark V tall deck MD truck. THIS ENGINE CAN BE USED FOR BOTH GASOLINE OR LPG/CNG. W/O fuel pump boss, W/O clutch pivot boss. Flat tappet camshaft. Requires oil line to compressor. Has oil cooler provision. Does not include oil pan, valve covers, or front cover.

1991 - 1995 Chevrolet topkick (C6,7)
1991 - 1995 GMC Kodiak (C6,7)
1992 - 1995 Medium Duty Chassis (P6)
1993 - 1995 Medium Duty Bus Chassis (B7)
1991 School Buss (B6)

Application List



  • 12491583
  • 12491583
  • GM (General Motors)
  • Replaced by 12491583
  • New


Shipping Information

  • Item Requires Shipping
  • 600.0 lbs.
  • W27.0000” x H26.5000” x L30.5000”
  • FREE 48 State Shipping

Trusted Specialists GM engine & parts specialists
Located in the USA Owned, operated, & employed
Need Assistance? Call us at 888-748-4655
Mon-Thu 8am-6pm EST
Fri 8am-5:30pm EST
Have a Question Email us and we'll get back to you within 24 hours
Pace B2B