CORTECO 49386309 55x83x8 FPM BFSLSFRSX67 Oil Seal

CORTECO 49386309 55x83x8 FPM BFSLSFRSX67 Oil Seal

CORTECO 49386309 is a radial shaft oil seal with nominal dimensions of 55x83x8 mm, catalogued for transfer case applications.

Exact design designation: BFSLSFRSX67 Simmerring

Material: FPM - Fluoro Rubber

Manufacturer reference: 49386309

OE FIAT: 71738977, 71749989

EAN: 3358960517036

Swirl type: Left-hand Twist

Additional dust lip: Yes

Catalogue application: Transfer Case

Complete product identification:

CORTECO -> 49386309 -> 55x83x8 mm -> FPM -> BFSLSFRSX67 -> Left-hand Twist -> FIAT 71738977 / 71749989

CORTECO 49386309 Dimensions

The principal dimensions are:

Inside diameter / nominal shaft diameter d: 55 mm

Outside diameter D: 83 mm

Width B: 8 mm

Complete dimensions: 55x83x8 mm

The first dimension corresponds to the nominal shaft diameter, the second to the outside diameter and the third to the seal width.

All three dimensions should be verified when selecting a replacement.

Matching the 55 mm shaft diameter, 83 mm outside diameter and 8 mm width alone does not establish complete technical interchangeability.

BFSLSFRSX67 Simmerring Design

The exact CORTECO design designation for reference 49386309 is:

Design: BFSLSFRSX67 Simmerring

This construction incorporates an additional dust lip and directional sealing geometry.

The exact BFSLSFRSX67 designation is an important selection criterion and should be considered together with the 55x83x8 mm dimensions, FPM sealing material and Left-hand Twist specification.

An oil seal with the same nominal dimensions should not automatically be considered constructionally equivalent.

Additional Dust Lip

CORTECO 49386309 incorporates an additional dust lip.

Additional dust lip: Yes

The dust lip provides an additional barrier on the external side of the primary sealing area and helps restrict external contaminants from reaching the main sealing interface.

This is an important construction characteristic when comparing CORTECO 49386309 with other 55x83x8 mm radial shaft oil seals.

Matching dimensions alone do not confirm that another seal has the same lip configuration.

Left-hand Twist Sealing Geometry

CORTECO 49386309 is specified with directional sealing geometry.

Swirl type: Left-hand Twist

This means the sealing geometry is designed with a left-hand directional orientation.

The direction is an important construction characteristic and should be considered when selecting a corresponding replacement.

A right-hand twist seal or a seal with another directional geometry should not automatically be considered technically identical.

FPM Fluoro Rubber

The sealing material of CORTECO 49386309 is:

Material: FPM - Fluoro Rubber

FPM is a fluoroelastomer used in technical radial shaft sealing applications.

The sealing material is an important selection criterion alongside dimensions and seal construction.

A 55x83x8 mm oil seal manufactured from NBR, ACM or another elastomer should not automatically be considered materially equivalent to CORTECO 49386309.

Exact compatibility depends on the specific medium, additives, temperature and actual operating conditions.

Specific maximum temperature, pressure or shaft speed values should not be assigned to this exact product without confirmation for CORTECO 49386309.

CORTECO 49386309 Transfer Case Oil Seal

CORTECO 49386309 is catalogued as a:

Product application: Shaft Seal, Transfer Case

It is therefore identified in catalogue data as a radial shaft seal for a transfer case.

The complete product identification combines:

CORTECO reference: 49386309

Dimensions: 55x83x8 mm

Material: FPM

Design: BFSLSFRSX67 Simmerring

Swirl type: Left-hand Twist

Additional dust lip: Yes

Exact compatibility with a particular vehicle should be verified using the required OE reference and vehicle-specific parts information.

CORTECO 49386309 FIAT 71738977 and 71749989

CORTECO 49386309 corresponds to the following FIAT OE references:

OE FIAT: 71738977

OE FIAT: 71749989

CORTECO reference: 49386309

Design: BFSLSFRSX67 Simmerring

Dimensions: 55x83x8 mm

Material: FPM

Swirl type: Left-hand Twist

These OE numbers provide important identification points when searching for the corresponding FIAT transfer case oil seal.

The required OE number should be verified for the specific vehicle before installation.

CORTECO 49386309 Reference Numbers

Manufacturer: CORTECO

Manufacturer reference: 49386309

Design / Trade Number: BFSLSFRSX67 Simmerring

OE FIAT: 71738977, 71749989

EAN: 3358960517036

Dimensions: 55x83x8 mm

Material: FPM

Swirl type: Left-hand Twist

Additional dust lip: Yes

These parameters should be considered together when identifying CORTECO 49386309 or selecting a corresponding replacement.

Why Does Left-hand Twist Matter?

Directional sealing geometry is part of the construction of CORTECO 49386309.

Swirl type: Left-hand Twist

For this reason, finding another seal with the same 55x83x8 mm dimensions and FPM material alone is not sufficient to establish technical equivalence.

The sealing direction and exact construction should also be verified.

This is particularly important when comparing seals that may be available with right-hand, left-hand or other directional sealing geometries.

CORTECO 49386309 vs Standard 55x83x8 Oil Seal

A standard radial shaft oil seal with nominal dimensions of 55x83x8 mm should not automatically be considered equivalent to CORTECO 49386309.

CORTECO 49386309 combines:

Dimensions: 55x83x8 mm

Material: FPM

Design: BFSLSFRSX67 Simmerring

Additional dust lip: Yes

Swirl type: Left-hand Twist

OE FIAT: 71738977, 71749989

All relevant technical characteristics should therefore be checked when selecting a replacement.

How to Select a Replacement for CORTECO 49386309

When selecting a corresponding oil seal, verify:

• CORTECO reference 49386309
• dimensions 55x83x8 mm
• shaft diameter 55 mm
• outside diameter 83 mm
• width 8 mm
• material FPM
• design BFSLSFRSX67 Simmerring
• additional dust lip
• Left-hand Twist sealing geometry
• FIAT OE 71738977 / 71749989
• transfer case application
• requirements of the specific installation

Matching the 55x83x8 mm dimensions alone does not confirm complete technical interchangeability.

Technical Specification

Manufacturer: CORTECO

Manufacturer reference: 49386309

Product type: Radial shaft oil seal / Transfer case shaft seal

Design: BFSLSFRSX67 Simmerring

Dimensions: 55x83x8 mm

Shaft diameter d: 55 mm

Outside diameter D: 83 mm

Width B: 8 mm

Material: FPM - Fluoro Rubber

Additional dust lip: Yes

Swirl type: Left-hand Twist

Catalogue application: Transfer Case

OE FIAT: 71738977, 71749989

EAN: 3358960517036

FAQ

What are the dimensions of CORTECO 49386309?

CORTECO 49386309 measures 55x83x8 mm.

Shaft diameter d: 55 mm

Outside diameter D: 83 mm

Width B: 8 mm

What material is CORTECO 49386309 made from?

Material: FPM - Fluoro Rubber

What design is CORTECO 49386309?

Exact design designation: BFSLSFRSX67 Simmerring

Does CORTECO 49386309 have an additional dust lip?

Yes. CORTECO 49386309 incorporates an additional dust lip that helps restrict external contaminants from reaching the primary sealing area.

What swirl direction does CORTECO 49386309 have?

Swirl type: Left-hand Twist

The seal therefore uses left-hand directional sealing geometry.

Is CORTECO 49386309 a transfer case oil seal?

Yes. CORTECO 49386309 is catalogued as a Shaft Seal, Transfer Case.

Which FIAT OE numbers correspond to CORTECO 49386309?

OE FIAT: 71738977, 71749989

What is the EAN for CORTECO 49386309?

EAN: 3358960517036

Can a standard 55x83x8 oil seal replace CORTECO 49386309?

Not necessarily. Matching the 55x83x8 mm dimensions alone does not establish complete interchangeability. The FPM material, BFSLSFRSX67 design, additional dust lip, Left-hand Twist geometry and application-specific requirements should also be verified.

Can an NBR 55x83x8 oil seal replace CORTECO 49386309?

Not automatically. CORTECO 49386309 is manufactured from FPM, while NBR is a different elastomer. Matching dimensions do not establish material or technical equivalence.

Can a right-hand twist oil seal replace CORTECO 49386309?

Not automatically. CORTECO 49386309 is specified as Left-hand Twist. The required directional sealing geometry should be verified before substitution.

Are FIAT 71738977 and 71749989 associated with CORTECO 49386309?

Yes. Both FIAT 71738977 and FIAT 71749989 are OE references associated with CORTECO 49386309.

AI Overview

CORTECO 49386309 is an FPM radial shaft oil seal measuring 55x83x8 mm with the BFSLSFRSX67 Simmerring design. It incorporates an additional dust lip and Left-hand Twist directional sealing geometry. The seal is catalogued for transfer case applications and corresponds to FIAT OE 71738977 and 71749989. EAN: 3358960517036.