Looking for aftermarket parts to modify or upgrade your 1978 GMC C25 with bearings? At Tunersports.com we carry a huge selection of the top name brand performance bearing parts and accessories.

SHIPS FROM MANUFACTURER MS1038P30Clevite Main Bearing Set 1976-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $139.10 |
OUT OF STOCK MS1564PClevite Chevrolet Pass & Trk 400 H/P V8 1970-80 Main Bearing Set 1976-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $357.05 |
OUT OF STOCK MS829AClevite Chevrolet V8 366-396-402-427-454 1965-00 Main Bearing Set 1976-1978 GMC C25 Base $77.18 |
IN STOCK - DROPSHIPS MS829A10Clevite Chevrolet V8 366-396-402-427-454 1965-00 Main Bearing Set 1976-1978 GMC C25 Base $77.25 |
IN STOCK - DROPSHIPS MS829A20Clevite Chevrolet V8 366-396-402-427-454 1965-00 Main Bearing Set 1976-1978 GMC C25 Base $77.25 |
IN STOCK - DROPSHIPS MS829A30Clevite Chevrolet V8 366-396-402-427-454 1965-00 Main Bearing Set 1976-1978 GMC C25 Base $76.88 |
IN STOCK - DROPSHIPS MS829A40Clevite Chevrolet V8 366-396-402-427-454 1965-00 Main Bearing Set 1976-1978 GMC C25 Base $79.59 |
IN STOCK - DROPSHIPS MS829HClevite GMC Pass & Trk 366 6.0L 396 6.6L 402 6.6L 427 7.0L 454 7.4L Main Bearing Set 1976-1978 GMC C25 Base / High Sierra $149.41 |
IN STOCK - DROPSHIPS MS829H1Clevite Chevrolet Pass & Trk 366 396 402 427 454 502 H/P V8 1965-94 Main Bearing Set 1976-1978 GMC C25 Base / High Sierra $155.19 |
IN STOCK - DROPSHIPS MS829H20Clevite Chevrolet V8 366-396-402-427-454-502 1965-2000 Main Bearing Set 1976-1978 GMC C25 Base / High Sierra $160.82 |
IN STOCK - DROPSHIPS MS829H21Clevite Chevrolet V8 366-396-402-427-454-502 1965-2000 Main Bearing Set 1976-1978 GMC C25 Base / High Sierra $141.05 |
OUT OF STOCK MS829H30Clevite Chevrolet V8 366-396-402-427-454-502 1965-2000 Main Bearing Set 1976-1978 GMC C25 Base / High Sierra $147.63 |
IN STOCK - DROPSHIPS MS829H9Clevite Chevrolet V8 366-396-402-427-454-502 1965-2000 Main Bearing Set 1976-1978 GMC C25 Base / High Sierra $150.08 |
OUT OF STOCK MS829HGClevite Chevrolet Pass & Trk 366 396 402 427 454 502 V8 1965-94 Main Bearing Set 1976-1978 GMC C25 Base / High Sierra $152.19 |
IN STOCK - DROPSHIPS MS829HXClevite Tri Armor GMC Pass & Trk 366/396/402/427/454 Main Bearing Set 1976-1978 GMC C25 Base / High Sierra $156.50 |
OUT OF STOCK MS829PClevite Tri Armor GMC Pass & Trk 366/396/402/427/454 Main Bearing Set 1976-1978 GMC C25 Base $124.42 |
IN STOCK - DROPSHIPS MS829P1Clevite Chevrolet Pass & Trk 366 396 402 427 454 502 V8 1965-94 Main Bearing Set 1976-1978 GMC C25 Base $116.60 |
IN STOCK - DROPSHIPS MS829VClevite GMC Pass & Trk 366 6.0L 396 6.6L 402 6.6L 427 7.0L 454 7.4L Main Bearing Set 1976-1978 GMC C25 Base / High Sierra $167.85 |

SHIPS FROM MANUFACTURER MB509HP011Optional to MB 509SI (Race bearings, Bi-metal Alecular)... King Engine Bearings Chevrolet 400 V8 Crankshaft Main Bearings 1976-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $123.81 |
SHIPS FROM MANUFACTURER MB509HP020King Engine Bearings Chevrolet 400 V8 Crankshaft Main Bearing Set (Set of 5) 1976-1978 GMC C25 Base / High Sierra / Sierra Classic / Sierra Grande $109.76 |