Welcome to Hummer Parts Guy Login | Create Account
View Cart | 0 Item(s) / $0
HPG remains open but business hours will be changing to Mon-Fri 8am-2pm central so that we can help with the home schooling.
Customers may experience delays with certain warehouse locations due to UPS shipping traffic priorities. Thank you for your patience.

"Can I please be fired from the home schooling teaching job?”

VALVE, TRANSMISSION (BYPASS)
VALVE, TRANSMISSION (BYPASS)

12447076 / 01-456-6257
VALVE, TRANSMISSION (BYPASS)

On Sale$203.41
MSRP:$234.71
Your Savings:$31.30
Unit of Measure: EACH
Availability: In Stock @ HPG (PA Warehouse)
AMG
In-House Product Experts
We know our Hummer H1 parts
IMPORTANT NOTE: SEE NOTE BELOW

Notes:

This assembly has a bi-metal strip inside that retains fluid until the transmission is warm. Once warm the bypass valve opens and releases the transmission fluid to the oil cooler. This is most often the cause of the "mystery whining/tapping noise" coming from under the passenger seat. The noise is caused from the bi-metal strip not closing properly and the fluid draining backwards.

NSN:

4820-01-456-6257
SPECIFICATION
DESCRIPTION
PART REVISION
PRIOR PART(S) SUPERSEDED, NEW PART NUMBER ISSUED
H1 Body Type
ALL BODY TYPES
H1 Engine Type
5.7L, 6.2L, 6.5L NA, 6.5L TD
H1 Model Year
1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006K

Frequently Bought Together

Recently Viewed Items