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Need expert help? Reach out to us via live chat MON-SAT, 9AM to 5PM ET, for support. Our specialists are ready to assist you!

Please, add your first item to the wishlist

Select vehicle to confirm fitment

Engine Timing Camshaft Sprocket

PART#: ZS-S394
INA
Interchanges
BrandPart #
CloyesS394
General Motors3891517
INA US5540428100
MellingS394
SA GearS-394 / S394
Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
1990ChevroletR2500 SuburbanSilverado7.4V8GASN/AHeavy Duty
1990ChevroletR2500 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1990ChevroletR3500Cheyenne7.4V8GASN/AHeavy Duty
1990ChevroletR3500Silverado7.4V8GASN/AHeavy Duty
1990ChevroletR3500Scottsdale7.4V8GASN/AHeavy Duty
1990ChevroletV2500 SuburbanSilverado7.4V8GASN/AHeavy Duty
1990ChevroletV2500 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1990ChevroletV3500Cheyenne7.4V8GASN/AHeavy Duty
1990ChevroletV3500Silverado7.4V8GASN/AHeavy Duty
1990ChevroletV3500Scottsdale7.4V8GASN/AHeavy Duty
1990GMCC3500Sierra SLE7.4V8GASN/AHeavy Duty
1990GMCC3500Sierra SLX7.4V8GASN/AHeavy Duty
1990GMCC3500Sierra7.4V8GASN/AHeavy Duty
1990GMCG3500Vandura7.4V8GASN/AHeavy Duty
1990GMCG3500Rally7.4V8GASN/AHeavy Duty
1990GMCG3500Rally Camper Special7.4V8GASN/AHeavy Duty
1990GMCG3500Rally STX7.4V8GASN/AHeavy Duty
1990GMCG3500Vandura Special7.4V8GASN/AHeavy Duty
1990GMCG3500Magnavan7.4V8GASN/AHeavy Duty
1990GMCK3500Sierra7.4V8GASN/AHeavy Duty
1990GMCK3500Sierra SLE7.4V8GASN/AHeavy Duty
1990GMCK3500Sierra SLX7.4V8GASN/AHeavy Duty
1990GMCP3500Base7.4V8GASN/AHeavy Duty
1990GMCP3500Value Van7.4V8GASN/AHeavy Duty
1990GMCR2500 SuburbanBase7.4V8GASN/AHeavy Duty
1990GMCR2500 SuburbanSLE7.4V8GASN/AHeavy Duty
1990GMCR3500Base7.4V8GASN/AHeavy Duty
1990GMCR3500SLE7.4V8GASN/AHeavy Duty
1990GMCV3500Base7.4V8GASN/AHeavy Duty
1990GMCV3500SLE7.4V8GASN/AHeavy Duty
1989ChevroletR2500Cheyenne7.4V8GASN/AHeavy Duty
1989ChevroletR2500Silverado7.4V8GASN/AHeavy Duty
1989ChevroletR2500Scottsdale7.4V8GASN/AHeavy Duty
1989ChevroletR2500 SuburbanSilverado7.4V8GASN/AHeavy Duty
1989ChevroletR2500 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1989ChevroletR3500Scottsdale7.4V8GASN/AHeavy Duty
1989ChevroletR3500Cheyenne7.4V8GASN/AHeavy Duty
1989ChevroletR3500Silverado7.4V8GASN/AHeavy Duty
1989ChevroletV3500Cheyenne7.4V8GASN/AHeavy Duty
1989ChevroletV3500Silverado7.4V8GASN/AHeavy Duty
1989ChevroletV3500Scottsdale7.4V8GASN/AHeavy Duty
1989GMCC3500Sierra SLX7.4V8GASN/A
1989GMCC3500Sierra SLE7.4V8GASN/A
1989GMCC3500Sierra7.4V8GASN/A
1989GMCG3500Rally7.4V8GASN/A
1989GMCG3500Vandura7.4V8GASN/A
1989GMCG3500Rally Camper Special7.4V8GASN/A
1989GMCG3500Rally STX7.4V8GASN/A
1989GMCG3500Vandura Special7.4V8GASN/A
1989GMCG3500Magnavan7.4V8GASN/A
1989GMCK3500Sierra7.4V8GASN/A
1989GMCK3500Sierra SLE7.4V8GASN/A
1989GMCK3500Sierra SLX7.4V8GASN/A
1989GMCP3500Base7.4V8GASN/AHeavy Duty
1989GMCP3500Value Van7.4V8GASN/AHeavy Duty
1989GMCR2500High Sierra7.4V8GASN/AHeavy Duty
1989GMCR2500Base7.4V8GASN/AHeavy Duty
1989GMCR2500Sierra Classic7.4V8GASN/AHeavy Duty
1989GMCR2500 SuburbanBase7.4V8GASN/AHeavy Duty
1989GMCR2500 SuburbanSierra Classic7.4V8GASN/AHeavy Duty
1989GMCR3500Sierra Classic7.4V8GASN/AHeavy Duty
1989GMCR3500High Sierra7.4V8GASN/AHeavy Duty
1989GMCR3500Base7.4V8GASN/AHeavy Duty
1989GMCV3500Sierra Classic7.4V8GASN/AHeavy Duty
1989GMCV3500Base7.4V8GASN/AHeavy Duty
1989GMCV3500High Sierra7.4V8GASN/AHeavy Duty
1988ChevroletR20Custom Deluxe7.4V8GASN/AHeavy Duty
1988ChevroletR20Scottsdale7.4V8GASN/AHeavy Duty
1988ChevroletR20Cheyenne7.4V8GASN/AHeavy Duty
1988ChevroletR20Silverado7.4V8GASN/AHeavy Duty
1988ChevroletR20 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1988ChevroletR20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1988ChevroletR30Custom Deluxe7.4V8GASN/AHeavy Duty
1988ChevroletR30Cheyenne7.4V8GASN/AHeavy Duty
1988ChevroletR30Scottsdale7.4V8GASN/AHeavy Duty
1988ChevroletR30Silverado7.4V8GASN/AHeavy Duty
1988ChevroletV20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1988ChevroletV20 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1988ChevroletV30Custom Deluxe7.4V8GASN/AHeavy Duty
1988ChevroletV30Cheyenne7.4V8GASN/AHeavy Duty
1988ChevroletV30Silverado7.4V8GASN/AHeavy Duty
1988ChevroletV30Scottsdale7.4V8GASN/AHeavy Duty
1988GMCC3500Sierra7.4V8GASN/A
1988GMCC3500Sierra SLE7.4V8GASN/A
1988GMCC3500Sierra SLX7.4V8GASN/A
1988GMCG3500Magnavan7.4V8GASN/AHeavy Duty
1988GMCK3500Sierra7.4V8GASN/A
1988GMCK3500Sierra SLX7.4V8GASN/A
1988GMCK3500Sierra SLE7.4V8GASN/A
1988GMCP3500Base7.4V8GASN/AHeavy Duty
1988GMCP3500Value Van7.4V8GASN/AHeavy Duty
1988GMCR2500High Sierra7.4V8GASN/AHeavy Duty
1988GMCR2500Sierra Classic7.4V8GASN/AHeavy Duty
1988GMCR2500Base7.4V8GASN/AHeavy Duty
1988GMCR2500 SuburbanBase7.4V8GASN/AHeavy Duty
1988GMCR2500 SuburbanSierra Classic7.4V8GASN/AHeavy Duty
1988GMCR3500High Sierra7.4V8GASN/AHeavy Duty
1988GMCR3500Sierra Classic7.4V8GASN/AHeavy Duty
1988GMCR3500Base7.4V8GASN/AHeavy Duty
1988GMCV3500High Sierra7.4V8GASN/AHeavy Duty
1988GMCV3500Sierra Classic7.4V8GASN/AHeavy Duty
1988GMCV3500Base7.4V8GASN/AHeavy Duty
1987ChevroletR20Scottsdale7.4V8GASN/AHeavy Duty
1987ChevroletR20Custom Deluxe7.4V8GASN/AHeavy Duty
1987ChevroletR20Silverado7.4V8GASN/AHeavy Duty
1987ChevroletR20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1987ChevroletR20 SuburbanCustom Deluxe7.4V8GASN/AHeavy Duty
1987ChevroletR20 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1987ChevroletR30Custom Deluxe7.4V8GASN/AHeavy Duty
1987ChevroletR30Silverado7.4V8GASN/AHeavy Duty
1987ChevroletR30Scottsdale7.4V8GASN/AHeavy Duty
1987ChevroletV20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1987ChevroletV20 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1987ChevroletV20 SuburbanCustom Deluxe7.4V8GASN/AHeavy Duty
1987ChevroletV30Silverado7.4V8GASN/AHeavy Duty
1987ChevroletV30Scottsdale7.4V8GASN/AHeavy Duty
1987ChevroletV30Custom Deluxe7.4V8GASN/AHeavy Duty
1987GMCP3500Base7.4V8GASN/AHeavy Duty
1987GMCP3500Value Van7.4V8GASN/AHeavy Duty
1987GMCR2500High Sierra7.4V8GASN/AHeavy Duty
1987GMCR2500Sierra Classic7.4V8GASN/AHeavy Duty
1987GMCR2500Base7.4V8GASN/AHeavy Duty
1987GMCR2500 SuburbanSierra Classic7.4V8GASN/AHeavy Duty
1987GMCR2500 SuburbanHigh Sierra7.4V8GASN/AHeavy Duty
1987GMCR2500 SuburbanBase7.4V8GASN/AHeavy Duty
1987GMCR3500Sierra Classic7.4V8GASN/AHeavy Duty
1987GMCR3500Base7.4V8GASN/AHeavy Duty
1987GMCR3500High Sierra7.4V8GASN/AHeavy Duty
1987GMCV3500High Sierra7.4V8GASN/AHeavy Duty
1987GMCV3500Sierra Classic7.4V8GASN/AHeavy Duty
1987GMCV3500Base7.4V8GASN/AHeavy Duty
1986ChevroletC20Silverado7.4V8GASN/AHeavy Duty
1986ChevroletC20Scottsdale7.4V8GASN/AHeavy Duty
1986ChevroletC20Custom7.4V8GASN/AHeavy Duty
1986ChevroletC20 SuburbanCustom7.4V8GASN/AHeavy Duty
1986ChevroletC20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1986ChevroletC20 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1986ChevroletC30Silverado7.4V8GASN/AHeavy Duty
1986ChevroletC30Custom7.4V8GASN/AHeavy Duty
1986ChevroletC30Scottsdale7.4V8GASN/AHeavy Duty
1986ChevroletK30Custom7.4V8GASN/AHeavy Duty
1986ChevroletK30Silverado7.4V8GASN/AHeavy Duty
1986ChevroletK30Scottsdale7.4V8GASN/AHeavy Duty
1986ChevroletP30Base7.4V8GASN/AHeavy Duty
1986GMCC2500High Sierra7.4V8GASN/AHeavy Duty
1986GMCC2500Sierra Classic7.4V8GASN/AHeavy Duty
1986GMCC2500Base7.4V8GASN/AHeavy Duty
1986GMCC2500 SuburbanSierra Classic7.4V8GASN/AHeavy Duty
1986GMCC2500 SuburbanHigh Sierra7.4V8GASN/AHeavy Duty
1986GMCC2500 SuburbanBase7.4V8GASN/AHeavy Duty
1986GMCC3500Sierra Classic7.4V8GASN/AHeavy Duty
1986GMCC3500High Sierra7.4V8GASN/AHeavy Duty
1986GMCC3500Base7.4V8GASN/AHeavy Duty
1986GMCK3500Sierra Classic7.4V8GASN/AHeavy Duty
1986GMCK3500High Sierra7.4V8GASN/AHeavy Duty
1986GMCK3500Base7.4V8GASN/AHeavy Duty
1986GMCP3500Value Van7.4V8GASN/AHeavy Duty
1986GMCP3500Base7.4V8GASN/AHeavy Duty
1985ChevroletC20Custom7.4V8GASN/AHeavy Duty
1985ChevroletC20Silverado7.4V8GASN/AHeavy Duty
1985ChevroletC20Scottsdale7.4V8GASN/AHeavy Duty
1985ChevroletC20 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1985ChevroletC20 SuburbanCustom7.4V8GASN/AHeavy Duty
1985ChevroletC20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1985ChevroletC30Silverado7.4V8GASN/AHeavy Duty
1985ChevroletC30Custom7.4V8GASN/AHeavy Duty
1985ChevroletC30Scottsdale7.4V8GASN/AHeavy Duty
1985ChevroletK20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1985ChevroletK20 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1985ChevroletK20 SuburbanCustom7.4V8GASN/AHeavy Duty
1985ChevroletK30Silverado7.4V8GASN/AHeavy Duty
1985ChevroletK30Scottsdale7.4V8GASN/AHeavy Duty
1985ChevroletK30Custom7.4V8GASN/AHeavy Duty
1985ChevroletP30Step-Van7.4V8GASN/AHeavy Duty
1985ChevroletP30Base7.4V8GASN/AHeavy Duty
1985GMCC2500Sierra Classic7.4V8GASN/AHeavy Duty
1985GMCC2500High Sierra7.4V8GASN/AHeavy Duty
1985GMCC2500Base7.4V8GASN/AHeavy Duty
1985GMCC2500 SuburbanSierra Classic7.4V8GASN/AHeavy Duty
1985GMCC2500 SuburbanHigh Sierra7.4V8GASN/AHeavy Duty
1985GMCC2500 SuburbanBase7.4V8GASN/AHeavy Duty
1985GMCC3500Sierra Classic7.4V8GASN/AHeavy Duty
1985GMCC3500High Sierra7.4V8GASN/AHeavy Duty
1985GMCC3500Base7.4V8GASN/AHeavy Duty
1985GMCK3500High Sierra7.4V8GASN/AHeavy Duty
1985GMCK3500Sierra Classic7.4V8GASN/AHeavy Duty
1985GMCK3500Base7.4V8GASN/AHeavy Duty
1985GMCP3500Base7.4V8GASN/AHeavy Duty
1985GMCP3500Value Van7.4V8GASN/AHeavy Duty
1984ChevroletC20Silverado7.4V8GASN/AHeavy Duty
1984ChevroletC20Custom7.4V8GASN/AHeavy Duty
1984ChevroletC20Scottsdale7.4V8GASN/AHeavy Duty
1984ChevroletC20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1984ChevroletC20 SuburbanCustom7.4V8GASN/AHeavy Duty
1984ChevroletC20 SuburbanScottsdale7.4V8GASN/AHeavy Duty
1984ChevroletC30Silverado7.4V8GASN/AHeavy Duty
1984ChevroletC30Custom7.4V8GASN/AHeavy Duty
1984ChevroletC30Scottsdale7.4V8GASN/AHeavy Duty
1984ChevroletK30Silverado7.4V8GASN/AHeavy Duty
1984ChevroletK30Custom7.4V8GASN/AHeavy Duty
1984ChevroletK30Scottsdale7.4V8GASN/AHeavy Duty
1984ChevroletP30Base7.4V8GASN/AHeavy Duty
1984ChevroletP30Step-Van7.4V8GASN/AHeavy Duty
1984GMCC2500Sierra Classic7.4V8GASN/AHeavy Duty
1984GMCC2500Base7.4V8GASN/AHeavy Duty
1984GMCC2500High Sierra7.4V8GASN/AHeavy Duty
1984GMCC2500 SuburbanSierra Classic7.4V8GASN/AHeavy Duty
1984GMCC2500 SuburbanHigh Sierra7.4V8GASN/AHeavy Duty
1984GMCC2500 SuburbanBase7.4V8GASN/AHeavy Duty
1984GMCC3500High Sierra7.4V8GASN/AHeavy Duty
1984GMCC3500Base7.4V8GASN/AHeavy Duty
1984GMCC3500Sierra Classic7.4V8GASN/AHeavy Duty
1984GMCK3500Sierra Classic7.4V8GASN/AHeavy Duty
1984GMCK3500High Sierra7.4V8GASN/AHeavy Duty
1984GMCK3500Base7.4V8GASN/AHeavy Duty
1984GMCP3500Base7.4V8GASN/AHeavy Duty
1984GMCP3500Value Van7.4V8GASN/AHeavy Duty
1983ChevroletC20Custom7.4V8GASN/AHeavy Duty
1983ChevroletC20Scottsdale7.4V8GASN/AHeavy Duty
1983ChevroletC20Silverado7.4V8GASN/AHeavy Duty
1983ChevroletC20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1983ChevroletC20 SuburbanCustom7.4V8GASN/AHeavy Duty
1983ChevroletC30Silverado7.4V8GASN/AHeavy Duty
1983ChevroletC30Custom7.4V8GASN/AHeavy Duty
1983ChevroletC30Scottsdale7.4V8GASN/AHeavy Duty
1983ChevroletK30Scottsdale7.4V8GASN/AHeavy Duty
1983ChevroletK30Custom7.4V8GASN/AHeavy Duty
1983ChevroletK30Silverado7.4V8GASN/AHeavy Duty
1983ChevroletP30Step-Van7.4V8GASN/AHeavy Duty
1983ChevroletP30Base7.4V8GASN/AHeavy Duty
1983GMCC2500High Sierra7.4V8GASN/AHeavy Duty
1983GMCC2500Base7.4V8GASN/AHeavy Duty
1983GMCC2500Sierra Classic7.4V8GASN/AHeavy Duty
1983GMCC2500 SuburbanHigh Sierra7.4V8GASN/AHeavy Duty
1983GMCC2500 SuburbanBase7.4V8GASN/AHeavy Duty
1983GMCC2500 SuburbanSierra Classic7.4V8GASN/AHeavy Duty
1983GMCC3500Sierra Classic7.4V8GASN/AHeavy Duty
1983GMCC3500Base7.4V8GASN/AHeavy Duty
1983GMCC3500High Sierra7.4V8GASN/AHeavy Duty
1983GMCK3500Sierra Classic7.4V8GASN/AHeavy Duty
1983GMCK3500Base7.4V8GASN/AHeavy Duty
1983GMCK3500High Sierra7.4V8GASN/AHeavy Duty
1983GMCP3500Base7.4V8GASN/AHeavy Duty
1983GMCP3500Value Van7.4V8GASN/AHeavy Duty
1982ChevroletC20Silverado7.4V8GASN/AHeavy Duty
1982ChevroletC20Custom7.4V8GASN/AHeavy Duty
1982ChevroletC20Scottsdale7.4V8GASN/AHeavy Duty
1982ChevroletC20 SuburbanSilverado7.4V8GASN/AHeavy Duty
1982ChevroletC20 SuburbanCustom7.4V8GASN/AHeavy Duty
1982ChevroletC20 SuburbanScottsdale7.4V8GASN/AHeavy Duty
Warranty
We offer a 2-year warranty on all parts that we sell. If the part fails within 2 years of purchase, please contact us for instructions to replace it. The warranty does not cover normal wear and tear or improper installation. On many parts, we also offer Extend product protection, which is a way to add up to 3 additional years for 5 total years of worry free coverage. Select your preferred term length and you're covered!
Delivery & Returns

Delivery Info

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Returns Info

Newparts.com offers a thirty (30) day return for refund for all items purchased through Newparts.com. To qualify for return and refund, all items must be new and in their original manufacturers box. To initiate a return, please contact our customer service. This information is only a summary. Complete shipping and return policy information can be found in our web site policies.

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