MOTIVE GEAR
More Information for MOTIVE GEAR MGK218
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MOTIVE GEAR MGK218  
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MOTIVE GEAR MGK218 Specifications
Cover Bolt Quantity10
Gear Ratio4.88
Pinion Gear Tooth Quantity8
Pinion Shaft Diameter (IN)1.626
Pinion Spline Count30
Ring Gear Bolt Quantity10
Ring Gear Material8620 Steel
Ring Gear Tooth Quantity39
With Timken Bearings
At Motive Gear, from inception to inspection, parts surpass rigorous quality control tests. Their highly qualified quality control technicians are up-to-date on the latest industry innovations to ensure that the quality of our product is unsurpassed.
Differential Identification Guide

To order the correct ring & pinion, it's crucial to know the differential type and gear ratio on your vehicle.
  • First, determine your Differential Type.
  • Next, determine the gear ratio on your vehicle using one of the following methods:
    • Count The Teeth: Divide the number of teeth on the ring gear (big gear) by the number of teeth on the pinion gear (small gear). If you have 37 teeth on your ring gear and 12 teeth on your pinion gear, you have a 3.08 Gear Ratio (37 ÷ 12 = 3.08).
    • Verify Through A Dealer: Verify the ratio using your VIN number. This will only be accurate if the differential has not been previously modified.
Which Differential Rebuild Kit Is Right For You?

Kit Type Typical Contents
(Actual Contents Vary By Brand / Application)
Standard • Pinion Bearings & Races
• Carrier Bearings & Races
• Pinion Nut & Seal (where applicable)
• Crush Sleeve or Preload Shims (where applicable)
• Various Sealants / Marking Compounds
Master Standard Kit, Plus:
• Ring Gear Bolts
• Carrier & Pinion Shims (where applicable)
Mega Master Kit, Plus:
• Axle Bearings & Seals
Super Mega Kit, Plus:
• Differential Ring and Pinion


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Warranty Information:
1 Year or 50,000 Miles