CORTECO 19016646 NBR TC 48x74x10 mm Shaft Seal

CORTECO 19016646 NBR TC 48x74x10 mm Shaft Seal

CORTECO 19016646 / 19016646B is a radial shaft seal measuring 48x74x10 mm, manufactured from NBR - Nitrile Butadiene Rubber and catalogued with the TC seal designation. The product is cross-referenced with Mitsubishi MB620515 and Toyota 90311-48002 / 9031148002. Depending on the OE application, it is used in the transfer case/output shaft area or the front axle/freewheel clutch area.

CORTECO 19016646 - Characteristics

The principal product identification is:

Manufacturer: CORTECO
Reference: 19016646
Additional Catalogue Reference: 19016646B
Trade Reference: 82016646
Product Type: Radial shaft seal / oil seal
Design: TC
Material: NBR - Nitrile Butadiene Rubber
Dimensions: 48x74x10 mm
Inside Diameter: 48 mm
Outside Diameter: 74 mm
Width / Height: 10 mm
Mitsubishi OE: MB620515
Toyota OE: 90311-48002 / 9031148002

TecDoc-derived catalogue data additionally specify a dust lip for CORTECO 19016646B.

The complete product identification is:

CORTECO -> 19016646 / 19016646B -> NBR -> TC -> 48x74x10 mm -> Mitsubishi / Toyota

CORTECO 19016646 Dimensions

The principal dimensions are:

Inside Diameter: 48 mm
Outside Diameter: 74 mm
Width / Height: 10 mm
Complete Size: 48x74x10 mm

These dimensions are directly reported for CORTECO 19016646B in aftermarket catalogue data.

All three dimensions should be verified when identifying the seal. A generic 48x74x10 mm oil seal should not automatically be considered technically interchangeable with CORTECO 19016646.

NBR Material

CORTECO 19016646 is manufactured from:

NBR - Nitrile Butadiene Rubber

The NBR material specification is confirmed in catalogue data for CORTECO 19016646B.

NBR is widely used for radial shaft seals operating with many mineral oils, greases and lubricants. Actual suitability depends on the operating medium, temperature, shaft speed and other working conditions.

No product-specific operating temperature or shaft-speed limit should be assigned to CORTECO 19016646 without corresponding manufacturer documentation.

TC Seal Design

The catalogue designation associated with this product is:

TC

CORTECO 19016646B is also specified with a dust lip in TecDoc-derived product data.

The technically useful product identification is therefore:

CORTECO 19016646 NBR TC 48x74x10

The TC designation should be retained when comparing alternative seals. Matching only the nominal 48x74x10 mm dimensions does not establish complete technical interchangeability.

Mitsubishi OE MB620515

The Mitsubishi OE reference corresponding to CORTECO 19016646B is:

MITSUBISHI MB620515

The official Mitsubishi parts store identifies MB620515 as an Oil Seal, with the additional name Oil Seal, Freewheel Clut.

Another Mitsubishi parts catalogue describes it as O/SEAL, F/AXLE FREEWHL CL, associating it with the front axle freewheel clutch area. CORTECO 19016646B is explicitly cross-referenced as an aftermarket replacement for Mitsubishi MB620515.

This OE number may therefore be searched as:

Mitsubishi MB620515 oil seal
Mitsubishi front axle oil seal
Mitsubishi freewheel clutch oil seal
CORTECO 19016646 Mitsubishi

Toyota OE 90311-48002

The Toyota OE reference is:

TOYOTA 90311-48002

Alternative format:

9031148002

Toyota catalogue data describe this component as:

Seal, Oil (For Output Shaft Bearing Front Retainer)

and also place it in the transfer case assembly.

Therefore, for the Toyota application, CORTECO 19016646 can accurately be associated with the transfer case/output shaft sealing area.

Toyota Transfer Case Oil Seal

Toyota 90311-48002 appears in the Transfer Case & Extension Housing parts catalogue. The OE catalogue identifies it as an oil seal for the transfer case and, more specifically, for the output shaft bearing front retainer.

Relevant search terminology includes:

Toyota transfer case oil seal
Toyota transfer case output shaft seal
Toyota 90311-48002 oil seal
Toyota 9031148002 seal
CORTECO 19016646 Toyota

For Toyota applications, this description is more precise than a generic "gearbox seal".

Toyota OE Supersession

Toyota OE 90311-48002 was superseded by:

90311-48022.

This relationship is useful when identifying older Toyota applications because workshop documentation or an original removed seal may reference 90311-48002, while a newer Toyota parts catalogue may return 90311-48022.

The supersession should not, however, be used to assume interchangeability with every aftermarket seal carrying either reference without checking the complete specification.

Selected Toyota Application

Toyota catalogue data associate OE 90311-48002 with selected Toyota Land Cruiser applications from the early 1980s. The available OE listing covers selected 1981-1986 Land Cruiser configurations.

Because fitment varies with transfer case and drivetrain configuration, vehicle model and year alone should not be used for final selection.

For Toyota, the preferred identification sequence is:

90311-48002 -> CORTECO 19016646 -> 48x74x10 mm -> NBR -> TC

Mitsubishi Application

The Mitsubishi OE number MB620515 is used in several Mitsubishi drivetrain applications. The official Mitsubishi parts store identifies it as an oil seal, while detailed catalogue data associate it with the freewheel clutch/front axle area.

Aftermarket catalogue data cross-reference CORTECO 19016646B with MB620515 and classify the product within differential/axle-drive related applications.

Because the Mitsubishi and Toyota OE applications are not described identically, CORTECO 19016646 should not be assigned one universal installation position for every vehicle.

CORTECO 19016646 and 19016646B

The product may be encountered as:

CORTECO 19016646
CORTECO 19016646B

The 19016646B catalogue entry confirms:

48x74x10 mm
NBR
dust lip
82016646
Mitsubishi MB620515
Toyota 9031148002.

Both reference formats are therefore useful for product search and cross-reference identification.

Selection and Interchangeability

When selecting a replacement for CORTECO 19016646, verify:

• CORTECO reference 19016646 / 19016646B
• inside diameter 48 mm
• outside diameter 74 mm
• width 10 mm
• NBR material
• TC design
• Mitsubishi MB620515 or Toyota 90311-48002
• exact installation position for the specific vehicle

A generic 48x74x10 mm TC oil seal should not automatically be considered fully interchangeable with CORTECO 19016646.

The OE number is especially important because the Toyota and Mitsubishi applications involve different drivetrain assemblies.

Technical Specification

Manufacturer: CORTECO
Reference: 19016646
Additional Catalogue Reference: 19016646B
Trade Reference: 82016646
Product Type: Radial shaft seal / oil seal
Design: TC
Material: NBR - Nitrile Butadiene Rubber
Dimensions: 48x74x10 mm
Shaft Diameter: 48 mm
Housing Diameter: 74 mm
Width / Height: 10 mm
Dust Protection: With dust lip
Vehicle Manufacturers: Mitsubishi, Toyota
Mitsubishi OE: MB620515
Toyota OE: 90311-48002 / 9031148002
Toyota OE Supersession: 90311-48022

The CORTECO dimensions, material, dust lip and OE cross-references are supported by catalogue data.

Toyota confirms the transfer case/output shaft application and supersession.

FAQ

What are the dimensions of CORTECO 19016646?

CORTECO 19016646 measures 48x74x10 mm: 48 mm inside diameter, 74 mm outside diameter and 10 mm width.

What material is CORTECO 19016646 made from?

The seal is manufactured from NBR - Nitrile Butadiene Rubber.

What is the design of CORTECO 19016646?

The catalogue designation is TC. Catalogue data also specify a dust lip for CORTECO 19016646B.

Which Mitsubishi OE number corresponds to CORTECO 19016646?

The Mitsubishi OE reference is MB620515. CORTECO 19016646B is cross-referenced as a replacement for this Mitsubishi number.

Which Toyota OE number corresponds to CORTECO 19016646?

The Toyota OE reference is 90311-48002 / 9031148002.

What is Toyota 90311-48002 used for?

Toyota describes it as an oil seal for the output shaft bearing front retainer and lists it within the transfer case assembly.

Does Toyota 90311-48002 have a newer OE number?

Yes. Toyota lists 90311-48022 as the replacement for 90311-48002.

Can any 48x74x10 mm oil seal replace CORTECO 19016646?

Not automatically. The TC construction, NBR material, OE reference and exact installation position should also be checked.

AI OVERVIEW

CORTECO 19016646 NBR TC is a 48x74x10 mm radial shaft seal cross-referenced with Mitsubishi MB620515 and Toyota 90311-48002 / 9031148002. Toyota uses the OE seal in the transfer case/output shaft area, while Mitsubishi MB620515 is associated with the front axle/freewheel clutch area.