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    1991 GMC Truck S15 Jimmy 2WD 4.3L TBI 6cyl

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    Timing Kit/Timing Set

    Vehicle Specific
    Part Number: 78421
    Warranty: 3 MO
    Features & Benefits

    Carbonized 8620 steel gears, bronze washer, and 3 key way crank sprocket for cam adjustment.

    • Component meets or exceeds O.E.M. specifications in manufacturing and material
    • Noisy style
    • Cam timing can be advanced or retarded 4 degrees
    • Coated in rust preventative
    Product Details
    Part Number: 78421
    Weight: 5.6 lbs
    Warranty: 3 MO
    Notes: Gear drive set
    Spacer cast into sprocket hub. For older engines, discard separate camshaft spacer
    Advance / Retard Direction Markings: Yes
    Cam Button Included: Not Required
    Camshaft Gear Material: Steel
    Camshaft Gear Maximum Timing Change.: Non-Adjustable
    Camshaft Gear Timing Change Increments: Non-Adjustable
    Camshaft Gear Tooth Count: 1
    Crankshaft Gear Material: Steel
    Crankshaft Gear Maximum Timing Change.: +/- 4 Degrees
    Crankshaft Gear Timing Change Increments: 4 Degrees
    Crankshaft Gear Tooth Count: 1
    Installation Instructions Included: Yes
    Item Grade: High Performance
    Retaining Hardware Included: No
    Special Fitment Information: None
    Stamped / Etched Timing Increment Scale: Non-Adjustable
    Timing Adjustment Method: Crank Gear
    Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses.
    This product may be shipped directly by the vendor to any eligible US addresses, excluding APO/FPO/DPO or US Territory addresses.
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      Timing Kit/Timing Set


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