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25% Off Online Orders of Select Hard Parts. Enter Promo Code MMJ30 in Cart.

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Receive Up To 25% Off Your Online Purchase Of Select Parts And Accessories
Use promotional code MMJ25 at checkout to receive 25% off the following categories: Select Brake Parts, Water Pumps, Belts, A/C Parts, Starters, Alternators, Fuel Pumps, Radiators, Radiator Fans, Thermostats, Caps & Clamps, Clutches, Plug Wires, Chassis, CV Axles, Batteries, Battery Chargers & Booster Cables, OE Locks, Rack & Pinons, Window Motors, RainX Wipers, Appearance Chemicals, Car Wash Accessories, Floor Mats, Lift Equipment, Hand Tools, Travel Accessories, Outdoor Lifestyle, Towing, Car Covers, Seat Covers, Wheel Covers, Body Repair, Collectibles and Apparel.

Use promotional code MMJ20 at checkout to receive 20% off the following categories: Shocks & Struts, Ignition, Bearings & Seals and Engine Parts.

Offers not valid in combination with any other discounts, promotions or items already on sale. Not valid on gift cards, special orders, installed merchandise, commercial or fleet purchases. Those products that are included in these offers will be displayed in product search results and product detail pages. Excludes the following brands: Champion, Powerstop, Razor, Traxxas, Superchips, Hypertech, Edge, Bully Dog, Diablo, Edelbrock, Holley, NOS, Proform, Specialty Auto, Autometer, Accel, K&N, Kenwood, Pioneer, Sony, Thule, Thule Karrite, JVC, Flowmaster, Hurst, B&M, MSD, Moog, Wagner, Philips and BBK Performance. Valid online until 2:59 am EST on 7/3/17.


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Proform Engine Timing Gear Drive; Hi-Performance Under Cover Model; Fits SB Chevy Engine 903921
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  • Part #: 66917C|
  • SKU: 903921

6 days after 6 p.m.


    • Easy to install, fits under stock timing covers.
    • Includes locking plate, offset cam bushings, roller cam bearing, and bronze thrust bearing.
Retail
$99.99

Proform Engine Timing Gear Drive; Hi-Performance Under Cover Model; Fits SB Chevy Engine

For Chevrolet applications. These rugged gear drives offer high-precision timing, eliminating chain stretch. Machined for noise. Easy to install, fits under stock timing covers. Includes locking plate, offset cam bushings, roller cam bearing, and bronze thrust bearing.
  • Easy to install, fits under stock timing covers.
  • Includes locking plate, offset cam bushings, roller cam bearing, and bronze thrust bearing.
  • These rugged gear drives offer high-precision timing, eliminating chain stretch.


903921

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