Replace the stock drain plug in your transfer case with the Merchant Automotive Magnetic Drain Plug kit to catch small metal debris suspended in the fluid and help extend fluid life. The kit contains a Magnetic Drain plug and a new fill plug, each made out of a high strength corrosion resistant 304 Stainless Steel.

Note: The drain and fill plugs in the transfer case use pipe threads and should only be tightened snug with new Teflon sealing tape applied to the threads each time the plugs are reinstalled to prevent leaks. Over-tightening the plugs can crack the rear case half, so use caution when tightening the plugs!

Year

Vehicle

Chassis

Transfer Case Model Number

1998-2007

Silverado/Sierra

1500, 1500HD, 2500, 2500HD, 3500

NP246, NP261HD, NP263HD, NP261XHD, NP263XHD

1998-2003

Blazer/Jimmy

-

NP236

1999-2005

Astro/Safari

NP136

1999-2007

Escalade

NP246, NP149

2002-2007

Avalanche

1500, 2500

NP246, NP261, NP263, NP263HD

Suburban/Yukon XL

Tahoe/Yukon

NP246

2500HD 3500 Silverado Sierra 6.6 Liter V8 Duramax diesel engines:

LB7, LLY, LBZ

Years

1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, early 2007

Details:

• Engine Manufacturer: Duramax
• Liter: 6.6 Liter, 2.8 Liter
• Engine Designation: LB7, LLY, LBZ, LWN
• Engine Years: 1998-2007
• Material: Stainless Steel
• Transfer Case Model: 246, 261HD, 261XHD, 263HD, 263XHD

Applications:

• 1998-2007 Silverado/Sierra 2500HD/3500HD LB7/LLY/LBZ/LWN