GMC K25 Bearings

Looking for aftermarket parts to modify or upgrade your GMC K25 with bearings? At Tunersports.com we carry a huge selection of the top name brand performance bearing parts and accessories for your K25.

Whether you have a 1975 or 1978 GMC K25 in Base to Sierra Grande trim we have you covered. We have 25 bearings available parts to mod your K25. All parts have free shipping to the Continental US 48 States.

All K25 Bearing Parts:

Clevite Main Bearing Set

SHIPS FROM MANUFACTURER MS1038H Clevite GMC Pass & Trk 400 6.6L 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $103.32 Details

SHIPS FROM MANUFACTURER MS1038H1 Clevite GMC Pass & Trk 400 6.6L 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $106.08 Details

SHIPS FROM MANUFACTURER MS1038H10 Clevite GMC Pass & Trk 400 6.6L 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $110.54 Details

SHIPS FROM MANUFACTURER MS1038H11 Clevite Chevrolet V8 400 1970-1980 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $110.83 Details

SHIPS FROM MANUFACTURER MS1038H9 Clevite Chevrolet V8 400 1970-1980 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $112.42 Details

SHIPS FROM MANUFACTURER MS1038HC Clevite H-Series performance bearings have a medium level of eccentricity, high crush, and a hardened steel back and thin overlay. These bearings are made without flash plating for better seating. Use H-Series bearings with crankshafts that have oversize fillets and where engines run in the medium... Clevite Chevrolet Pass & Trk 400 V8 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $133.84 Details

SHIPS FROM MANUFACTURER MS1038HC10 Clevite H-Series performance bearings have a medium level of eccentricity, high crush, and a hardened steel back and thin overlay. These bearings are made without flash plating for better seating. Use H-Series bearings with crankshafts that have oversize fillets and where engines run in the medium... Clevite Tri Armor GMC Pass & Trk 400 6.6L 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $133.84 Details

SHIPS FROM MANUFACTURER MS1038HX Clevite Tri Armor GMC Pass & Trk 400 6.6L 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $107.14 Details

SHIPS FROM MANUFACTURER MS1038HXC Clevite H-Series performance bearings have a medium level of eccentricity, high crush, and a hardened steel back and thin overlay. These bearings are made without flash plating for better seating. Use H-Series bearings with crankshafts that have oversize fillets and where engines run in the medium... Clevite Chevy V8 400 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $136.26 Details

SHIPS FROM MANUFACTURER MS1038P Clevite Tri Armor GMC Pass & Trk 400 6.6L 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $138.66 Details

SHIPS FROM MANUFACTURER MS1038P10 Clevite Chevrolet Pass & Trk 400 V8 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $138.66 Details

SHIPS FROM MANUFACTURER MS1038P20 Clevite Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $139.79 Details

SHIPS FROM MANUFACTURER MS1038P30 Clevite Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $135.80 Details

SHIPS FROM MANUFACTURER MS1564P Clevite Chevrolet Pass & Trk 400 H/P V8 1970-80 Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $360.24 Details

King Engine Bearings Main Bearings

SHIPS FROM MANUFACTURER MB509HP011 Optional to MB 509SI (Race bearings, Bi-metal Alecular)... King Chevrolet 400 V8 Crankshaft Main Bearings 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $101.92 Details

SHIPS FROM MANUFACTURER MB509HP020 Optional to MB 509SI (Race bearings, Bi-metal Alecular)... King Chevrolet 400 V8 Crankshaft Main Bearing Set (Set of 5) 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $98.43 Details

SHIPS FROM MANUFACTURER MB509HP021 Optional to MB 509SI (Race bearings, Bi-metal Alecular)... King Chevrolet 400 V8 Crankshaft Main Bearing Set (Set of 5) 1975-1978 GMC K25 Base / High Sierra $101.92 Details

SHIPS FROM MANUFACTURER MB509HPSTDX Optional to MB 509SI (Race bearings, Bi-metal Alecular)... King Engine Bearings ChevrolET 400 V8 (Size STDX) Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $101.92 Details

SHIPS FROM MANUFACTURER MB509SI040 King Chevrolet 400 Crankshaft Main Bearing Set (Set of 5) 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $63.98 Details

SHIPS FROM MANUFACTURER MB509XP001 Optional to MB 509SI (Race bearings, Tri-metal pMax Black)... King Chevrolet 400 V8 (Size +0.001) Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $101.92 Details

SHIPS FROM MANUFACTURER MB509XP030 Optional to MB 509SI (Race bearings, Tri-metal pMax Black)... King Chevrolet 400 V8 Main Crankshaft Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $98.43 Details

IN STOCK - DROPSHIPS MB5224AM Optional to MB 509SI (Spacer set for use of Chevy 350 crank in 400 small block. To use with Chevy 350 main bearing (MB 557SI))... King General Motors 400CI 6.6L V8 OHV Crankshaft Main Bearing Set (Set of 5) 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $134.13 DetailsAdd to Cart

King Engine Bearings Performance Main Bearings

SHIPS FROM MANUFACTURER MB509HP Optional to MB 509SI (Race bearings, Bi-metal Alecular)... King Chevy 400ci 6.6L V8 Std Size 3/4 Groove Bi-Metal Performance Main Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $98.43 Details

SHIPS FROM MANUFACTURER MB509XPCSTDX Optional to MB 509SI (Race bearings, Tri-metal pMax Black Coated)... King Chevrolet 400 V8 Coated Performance Rod Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $159.90 Details

King Engine Bearings Performance Rod Bearings

SHIPS FROM MANUFACTURER MB509XPC Optional to MB 509SI (Race bearings, Tri-metal pMax Black Coated)... King Chevrolet 400 V8 Coated Performance Rod Bearing Set 1975-1978 GMC K25 Base / High Sierra / Sierra Classic / Sierra Grande $153.37 Details