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National Oil Seal 2457 Automatic Transmission Extension Housing Seal

(GMC Yukon XL 1500 2001-02, G2500 1991-95, Sierra 2500 HD 2001-07, Yukon 1994-99, 2001-02, Sierra 3500 HD 2007, K1500 1994-98, C1500 1991-98 + 66 more models)

Manufacturer

Picture for manufacturer National Oil Seal

Part Number

2457
4 reviews
Sale Price

$31.73

1 left at this price

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Usually delivered within 2 days

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Product Details

The National Oil Seal 2457 is a precision-engineered automatic transmission extension housing seal designed to provide reliable sealing performance in demanding automotive applications. This spring-loaded, multi-lip oil seal prevents fluid leakage and contamination in transmission systems.

Key Specifications:

  • Shaft Diameter: 2.125 inches
  • Outside Diameter: 2.885 inches
  • Overall Width: 0.550 inches
  • Lip Material: Polyacrylate Elastomer (ACM)
  • Design Type: Spring loaded, multi-lip
  • Temperature Range: -40°F to 225°F (-40°C to 107°C)

Performance Features:

  • Excellent resistance to EP (Extreme Pressure) lubricants
  • Superior heat capabilities compared to standard Nitrile seals
  • Low swell characteristics in hydrocarbon fluids
  • Solid construction for maximum durability

Manufactured by National, a trusted brand with over 75 years of experience in premium sealing solutions, this oil seal delivers the quality and reliable performance required for professional transmission repairs and maintenance.

Products specifications

Fits

GMC Yukon XL 1500 2001-02, G2500 1991-95, Sierra 2500 HD 2001-07, Yukon 1994-99, 2001-02, Sierra 3500 HD 2007, K1500 1994-98, C1500 1991-98, K2500 1991-2000, Jimmy 1991, Savana 2500 1996-2009, Savana 3500 1996-2009 + 62 more models

Agricultural Equipment

N

Application Specific

Y

Car Light Truck

N

Engine Specific

N

Freight Class

60

Heavy Duty Truck

N

High Performance

Y

Industrial Off Highway Equipment

N

Marine

N

Medium Duty Truck

N

Motorcycle ATV

N

Non Vehicle Specific

N

Personal WaterCraft

N

Small Engine

N

SnowMobile

N

Transmission Specific

N

Feature 2

Provides resistance to EP lubricants and have low swell in hydrocarbon fluids

Feature 3

Performs well in slow speed applications

Feature 4

Temperature Range: -20F to 300F; -29C to `49C

Footnote

Counter-Clockwise-Spiral Lip Design

Material

Acrylates

Outside Diameter (Inch)

2.885

Outside Diameter (mm)

73.280

Part Description

Oil Seal

Part Type

Seals

Series

2000

Type

#

Housing Bore (MM)

73.150

Outer Diameter (Inch)

2.885

Redicoat

Yes

Shaft (Inch)

2.125

Shaft (MM)

53.980

Shaft Size (Inch)

2.125

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