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Sierra Classic 1987 GMC S15 EL 1983 - 1988 GMC S15 Gypsy 1982 GMC S15 Sierra Grande 1983 - 1991 GMC S15 Jimmy Base 1985 GMC S15 Jimmy High Sierra 1983 - 1990 GMC S15 Jimmy Sierra Classic
Upgradeable from the standard TR87 rear wing system
Piece Count: 16 lug nuts + 4 locking lugs
Mil-Spec — Mil-spec Tefzel wire
Automatic transmission fitment - Paired to work with AT cooling lines
ATI Performance Products Drive Mandrel - Spacer .250 Thick On 1" Shaft 2.300 OD Porsche 911 GT3/RS (997) Sierra Classic 1987 GMC S15Dry Sump Drive Mandrels Don't wait until the long bolt holding your accessories fails! These drive mandrels are designed for use with Dry sump Systems. Application Mandrel spacer 1 4" thick (included w ATI Mandrels) slides on the mandrel shaft, fits to mandrel radius to provide flat surface for pulleys