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Part Number: AM-779108832


  • Fits either the LH (Driver Side) or RH (Passenger Side) FRONT
  • Helps to keep doors from opening too wide
  • Replaces dealer part numbers: 20-11525M001, 20-12066, 20-18727, R65-6019, 2011525M001, 2012066, 2018727, R656019
  • Direct replacement
  • Built to strict quality control standards

NOTE: This check kit allows you to do one side. If you would like to do both sides, please see our PAIR listing.

FREE Shipping is standard on Orders shipped to the lower 48 States (Contiguous United States). Standard shipping charges apply to Hawaii, Alaska and US Territories.
Shipping is not available to Canada for this item.

Expedited is available on checkout to the United States, excluding Alaska, Hawaii and US Territories as well as P.O. Boxes and APO/FPO/DPO addresses.   

Attention California Customers:

WARNING:  This product can expose you to chemicals including Chromium (Hexavalent Compounds), which is known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

10 Year Warranty

This item is backed by our 10-year warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

Please note: Any modifications to an item of any kind before contacting us will void any and all warranty coverage for this item. Please contact us before modifying the part so that we have the opportunity to correct the situation.

This part replaces:

  • Dorman 924-5401
  • OE # 20-187
  • OE # 20-12066
  • OE # 20-11525M001

Vehicle Fit

  • 1987-1996 Peterbilt 357 Door Check Kit
  • 2003-2006 Peterbilt 357 Door Check Kit
  • 1987-1996 Peterbilt 362 Door Check Kit
  • 2003-2010 Peterbilt 362 Door Check Kit
  • 2007-2013 Peterbilt 365 Door Check Kit
  • 2007-2009 Peterbilt 367 Door Check Kit
  • 1987-1996 Peterbilt 377 Door Check Kit
  • 1987-1996 Peterbilt 378 Door Check Kit
  • 2001-2003 Peterbilt 378 Door Check Kit
  • 1987-1996 Peterbilt 379 Door Check Kit
  • 2003-2006 Peterbilt 379 Door Check Kit

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