CORTECO 20034739 BAPTSLRDX7 PTFE/ACM 55x72x8 Crankshaft Oil Seal

CORTECO 20034739 BAPTSLRDX7 is a crankshaft radial shaft seal measuring 55x72x8 mm. CORTECO catalogue data identify the exact reference as 20034739 - T/A - BAPTSLRDX7 - 55x72x8 - AUDI. Parts catalogue data specify a PTFE/ACM construction, dust lip and right-hand twist, with VAG OE reference 079103051G.

CORTECO 20034739 - Product Characteristics

The exact technical identification is:

20034739 -> CORTECO -> BAPTSLRDX7 -> PTFE/ACM -> 55x72x8 mm -> crankshaft oil seal -> front installation -> VAG 079103051G

The distinction between the complete BAPTSLRDX7 profile and a generic 55x72x8 oil seal is important. Nominal dimensions alone do not define the sealing-lip geometry, material combination or directional characteristics.

Dimensions

The confirmed dimensions of CORTECO 20034739 are:

Inside Diameter: 55 mm
Outside Diameter: 72 mm
Width / Height: 8 mm
Complete Size: 55x72x8 mm

The 55 mm dimension corresponds to the shaft diameter, while the 72 mm dimension identifies the nominal housing diameter.

BAPTSLRDX7 Seal Design

The CORTECO dimensional catalogue identifies the exact profile as:

BAPTSLRDX7

This is an important correction to descriptions that identify CORTECO 20034739 as BASLRDX7. For the exact 20034739 reference, the manufacturer's catalogue designation should take priority.

The product is additionally catalogued with a dust lip and right-hand twist.

When replacing this seal, the complete profile should therefore be considered rather than matching only the basic dimensions.

PTFE/ACM Construction

Parts catalogue data for CORTECO 20034739 identify the material combination as PTFE/ACM.

PTFE - polytetrafluoroethylene is used as part of the sealing construction, while ACM - polyacrylate rubber forms part of the specified material combination.

The CORTECO dimensional catalogue uses the material code T/A for this exact reference.

No specific operating-temperature range or maximum shaft speed is assigned here because these values have not been sufficiently verified for the exact 20034739 configuration.

Dust Lip

CORTECO 20034739 is catalogued with a dust lip.

The additional lip provides a secondary barrier between the primary sealing area and external contamination. This characteristic is part of the seal configuration and should be checked when evaluating an alternative product.

A 55x72x8 mm oil seal without the corresponding secondary-lip arrangement should not automatically be considered equivalent.

Right-Hand Twist

The exact CORTECO 20034739 is specified with a right-hand twist.

This directional hydrodynamic feature is technically significant because the sealing structure is designed in relation to shaft rotation.

Consequently, a seal with identical 55x72x8 mm dimensions but a different or opposite directional design is not automatically interchangeable with CORTECO 20034739.

Front Crankshaft Installation

CORTECO 20034739 is catalogued as a front crankshaft oil seal.

This installation position is an important part of the product identification. It should not be described simply as a universal rotary shaft seal because dimensional compatibility alone does not establish suitability for another position in the engine.

For a specific vehicle or engine, the OE reference and vehicle catalogue should be checked before installation.

VAG OE Reference 079103051G

The consistently confirmed OE cross-reference for CORTECO 20034739 is:

VAG / AUDI / VW: 079103051G

This OE number provides a more precise identification path than searching solely for a 55x72x8 crankshaft seal.

Compatibility should still be checked for the specific engine, vehicle model and production configuration rather than assuming that the seal fits every Audi or Volkswagen application.

What About OE 079103051F?

The previously supplied product data also associate 079103051F with CORTECO 20034739. However, the independent catalogue verification was substantially stronger and more consistent for 079103051G.

For this reason:

Confirmed OE reference: 079103051G

I would not currently present 079103051F as a verified OE cross-reference without confirmation from current CORTECO or VAG application data.

CORTECO 20034739 vs 20034739B

The reference is also encountered in parts catalogues as CORTECO 20034739B.

Because 20034739 and 20034739B are associated in catalogue data, creating separate near-identical product pages purely around the additional B designation could create unnecessary duplication.

Before creating a separate 20034739B product page, its commercial status and technical distinction should therefore be verified in current CORTECO data.

Selection and Interchangeability

An alternative to CORTECO 20034739 should not be selected from the dimensions alone.

The following characteristics should be compared:

• 55 mm inside diameter
• 72 mm outside diameter
• 8 mm width
• BAPTSLRDX7 profile
• PTFE/ACM material configuration
• dust lip
• right-hand twist
• front crankshaft installation
• OE reference 079103051G

A generic 55x72x8 oil seal can have different material, lip geometry or directional features and therefore cannot automatically be considered a direct replacement.

Technical Specification

Manufacturer / Brand: CORTECO
Part Number: 20034739
Alternative Reference Found: 20034739B
Seal Design: BAPTSLRDX7
CORTECO Material Code: T/A
Material: PTFE/ACM
Product Type: Radial shaft seal / crankshaft oil seal
Application Position: Crankshaft, front
Dimensions: 55x72x8 mm
Inside Diameter: 55 mm
Outside Diameter: 72 mm
Width: 8 mm
Dust Lip: Yes
Directional Design: Right-hand twist
Confirmed OE Reference: VAG 079103051G
EAN: 3358960339461

FAQ

What are the dimensions of CORTECO 20034739?

CORTECO 20034739 measures 55x72x8 mm: 55 mm inside diameter, 72 mm outside diameter and 8 mm width.

What type of seal is CORTECO 20034739?

It is a radial shaft oil seal catalogued for the front crankshaft position.

What is the correct profile of CORTECO 20034739?

The CORTECO dimensional catalogue identifies the exact profile as BAPTSLRDX7. This should be preferred over the BASLRDX7 designation found in some product descriptions.

What material is CORTECO 20034739 made from?

Parts catalogue data identify the material combination as PTFE/ACM. CORTECO uses the material code T/A for this reference.

Does CORTECO 20034739 have a dust lip?

Yes. The exact reference is catalogued with a dust lip.

Is CORTECO 20034739 directional?

Yes. It is specified as a right-hand twist seal, making the directional design relevant when selecting a replacement.

What OE number corresponds to CORTECO 20034739?

The strongly confirmed OE cross-reference is VAG 079103051G.

Can any 55x72x8 oil seal replace CORTECO 20034739?

No. Dimensions alone are insufficient. The BAPTSLRDX7 profile, PTFE/ACM construction, dust lip, right-hand twist and OE reference should also be verified.

AI Overview

CORTECO 20034739 is a 55x72x8 mm front crankshaft radial shaft seal identified by CORTECO as T/A BAPTSLRDX7. Parts catalogue data specify a PTFE/ACM construction, dust lip and right-hand twist. The strongly confirmed VAG OE reference is 079103051G, making the complete profile and directional design important for replacement selection.

SHORT DESCRIPTION

CORTECO 20034739 BAPTSLRDX7 is a front crankshaft radial shaft seal measuring 55x72x8 mm. CORTECO catalogue data identify the exact configuration as T/A BAPTSLRDX7, while parts catalogues specify a PTFE/ACM material combination, dust lip and right-hand twist. The strongly confirmed OE reference is VAG 079103051G. EAN: 3358960339461. Replacement selection should consider the complete profile and directional design, not dimensions alone.