The EXCEL from Richmond XL-5645 is a differential cross pin shaft for the GM 8.875 in. 12-Bolt Car & Truck axle. The cross pin carries the spider pinion gears inside an open carrier, and a grooved or worn pin causes clunking on turns and accelerated gear wear. It fits select Chevy, GMC, Pontiac, Buick & Oldsmobile vehicles from 1964 to 1982; the complete vehicle application list appears below.

EXCEL from Richmond XL-5645 Technical Specifications:

• Designed for the GM 8.875 in. 12-Bolt Car & Truck axle
• For open differential carriers
• Install a new cross pin lock bolt or retainer and inspect the spider gears for wear at the same time.

EXCEL from Richmond XL-5645 Vehicle Applications:

• Chevy: 1965-1970 Bel Air; 1969-1974 Blazer; 1975-1982 C10; 1965-1967 C10 Panel; 1964-1974 C10 Pickup; 1967-1982 C10 Suburban; 1975-1981 C20; 1969-1974 C20 Pickup; 1973-1981 C20 Suburban; 1967-1972 Camaro; 1966-1972 Caprice; 1964-1973 Chevelle; 1965-1968 Chevy II; 1965-1972 El Camino; 1975-1981 G10; 1964-1974 G10 Van; 1975-1981 G20; 1967-1974 G20 Van; 1965-1972 Impala; 1975-1981 K10; 1964-1974 K10 Pickup; 1967-1982 K10 Suburban; 1975-1981 K20; 1969-1974 K20 Pickup; 1973-1981 K20 Suburban; 1975-1981 K5 Blazer; 1970-1972 Monte Carlo; 1969-1972 Nova; 1975-1980 P10; 1965-1967 P10 Series; 1967-1974 P10 Van; 1975-1981 P20; 1966-1967 P20 Series; 1968-1974 P20 Van; 1965-1966 Suburban
• GMC: 1975-1978 C15; 1975-1978 C15 Suburban; 1967-1974 C15/C1500 Pickup; 1967-1974 C15/C1500 Suburban; 1979-1982 C1500; 1979-1981 C1500 Suburban; 1975-1978 C25; 1975-1978 C25 Suburban; 1969-1974 C25/C2500 Pickup; 1969-1974 C25/C2500 Suburban; 1979-1981 C2500; 1979-1981 C2500 Suburban; 1965-1966 G1000 Series; 1975-1978 G15; 1967-1974 G15/G1500 Van; 1979-1981 G1500; 1975-1978 G25; 1967-1974 G25/G2500 Van; 1979-1981 G2500; 1970-1981 Jimmy; 1966 K1000 Pickup; 1975-1978 K15; 1975-1978 K15 Suburban; 1966-1974 K15/K1500 Pickup; 1967-1974 K15/K1500 Suburban; 1979-1982 K1500; 1979-1982 K1500 Suburban; 1975-1978 P15; 1967-1974 P15/P1500 Van; 1979-1980 P1500; 1975-1978 P25; 1967-1974 P25/P2500 Van; 1979-1981 P2500; 1965-1966 PB1000 Series; 1966 PB15 Series; 1965 PB1500 Series; 1966 PB2500 Van; 1971-1972 Sprint
• Pontiac: 1965-1971 Acadian; 1965-1969 Beaumont; 1965-1972 Bonneville; 1965-1972 Catalina; 1967-1970 Executive; 1967-1972 Firebird; 1965-1972 GTO; 1970-1972 Grand Prix; 1971-1972 Grand Safari; 1971-1972 Grandville; 1965-1972 Laurentian; 1965-1972 LeMans; 1965-1972 Parisienne; 1965-1970 Strato-Chief; 1970 Tempest
• Buick: 1971-1972 Centurion; 1965-1972 Electra; 1971-1972 Estate Wagon; 1970-1972 GS; 1968-1969 GS 350; 1968-1969 GS 400; 1970-1972 GS 455; 1965-1967 Gran Sport; 1971-1972 LeSabre; 1971-1972 Skylark; 1965-1969 Special; 1964-1972 Sportwagon
• Oldsmobile: 1971 442; 1965-1972 98; 1971-1972 Cutlass; 1971-1972 Cutlass Supreme; 1967-1968 Delmont 88; 1965-1972 Delta 88; 1965-1972 F85; 1965-1966 Jetstar 88; 1965 Jetstar I; 1965-1966 Starfire; 1967-1972 Vista Cruiser