TK30061 Turbo 400, 4L80E Adapter/Extension O-Ring

TK30061 Turbo 400, 4L80E Adapter/Extension O-Ring (square cross section o-ring) for 1985-1990 Turbo 400 and 1991-up 4L80E Transmission Main Case to the FRONT side of the Transmission to Transfer Case Adapter (also known as Transmission Rear Extension or Bearing Housing) or 4x4 adapter housing.

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Dan the Gear Man® Tech Notes:
Before Installing
Gasket
Matching Parts
Applications

Tech Note 1: Before Installing
Lightly lubricate your new o-ring with petroleum jelly before installation.

Tech Note 2: Gasket
1984 and prior Turbo 400 used TK30047 6 Bolt Gasket for between the Main Case and the FRONT side of the Transmission to Transfer Case Adapter.

Tech Note 3: Matching Parts
TK30052 6 Bolt Round Transfer Case Adapter Gasket
QU30066 6 Bolt Round Transfer Case to Adapter Gasket for 1985-1991 NP205 Transfer Cases
TK10517 Transfer Case Input Seal

Applications: ”Under Construction”
Chevy/GMC:
with Turbo 400 Transmission: 1985, 1986, 1987, 1988, 1989, 1990
with 4L80E Transmission: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009