CORTECO 12012579B is an FPM B1BASLRSX7 crankshaft radial shaft oil seal measuring 90x110x12 mm. d: 90 mm, D: 110 mm, B: 12 mm. Features an additional dust lip and left-hand twist. Installation position: gearbox side. Trade Number: 82012579. Confirmed OE references include BMW, Citroen, Deutz, Peugeot, Porsche and Renault. Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4. 24h Shipping. Available from stock in Poland for delivery across the EU.
CORTECO 12012579B is a crankshaft radial shaft oil seal measuring 90x110x12 mm, manufactured from FPM fluoroelastomer. The seal is catalogued for installation on the gearbox side of the crankshaft and incorporates an additional dust lip.
The specified sealing geometry has a:
left-hand twist
CORTECO Trade Number:
82012579
Complete identification:
CORTECO -> 12012579B -> 82012579 -> 90x110x12 mm -> FPM -> B1BASLRSX7
The principal dimensions are:
d - Inside diameter / shaft diameter: 90 mm
D - Outside diameter: 110 mm
B - Width: 12 mm
Complete dimensions:
90x110x12 mm
Additional identification:
Material: FPM
Design: B1BASLRSX7
Dust lip: Yes
Twist: Left-hand
Installation position: Gearbox side
Application type: Crankshaft seal
Trade Number: 82012579
EAN: 3358960125798
B1BASLRSX7 is the CORTECO design designation catalogued for this reference in current aftermarket data.
The complete design code should be retained when identifying the seal because it distinguishes this specific construction from other 90x110x12 mm radial shaft seals.
For CORTECO 12012579B, the confirmed characteristics include:
FPM material
90x110x12 mm dimensions
additional dust lip
left-hand twist
gearbox-side crankshaft installation
These characteristics are important when selecting a technically corresponding replacement.
CORTECO specifies:
FPM - fluoroelastomer
for this exact reference.
FPM is an elastomer family commonly used in radial shaft seals where resistance to oils, lubricants and elevated temperatures is required.
The exact operating limits depend on the specific FPM compound and operating conditions.
For this reason, a fixed temperature, shaft speed or pressure limit should not be assigned solely from the generic FPM material designation.
CORTECO 12012579B is catalogued as a:
crankshaft seal
with installation position:
gearbox side
The 90 mm sealing diameter corresponds to the shaft-side working diameter, while the 110 mm outside diameter locates the seal in the corresponding housing bore.
The total seal width is:
12 mm
Correct installation orientation is particularly important because this reference uses a defined left-hand twist sealing geometry.
CORTECO specifies this reference:
with dust lip
The additional lip helps restrict external contamination from reaching the primary sealing area.
This construction is therefore technically different from a corresponding radial shaft seal without an additional dust lip, even when both seals have identical 90x110x12 mm principal dimensions.
CORTECO 12012579B is specified with:
left-hand twist
The directional sealing geometry is an important characteristic of this crankshaft seal.
When selecting a replacement, the twist direction should not be ignored or replaced solely on the basis of matching dimensions.
A 90x110x12 mm seal with a different directional sealing geometry is not automatically an equivalent replacement.
Two numbers can be encountered when identifying this seal:
12012579B - CORTECO product reference
82012579 - CORTECO Trade Number
Both numbers identify this CORTECO crankshaft seal family.
The base reference may also appear in older catalogues as:
12012579
When searching historical catalogues, OE cross-references or existing machine records, all three identifiers can therefore be relevant.
Confirmed OE references include:
11141255012
11141275161
11141706785
11141706999
11142245364
1706531
7700619460
12152257
12152257
012712
99911326440
99911342641
7700619238
7700718505
7701348980
7701349596
OE numbers are useful for identification, but final compatibility should be checked against the exact vehicle, engine and original seal specification.
Several radial shaft seals can share the same:
90x110x12 mm
dimensions.
This does not mean that they are technically identical.
When selecting a replacement for CORTECO 12012579B, compare:
Dimensions: 90x110x12 mm
Material: FPM
Design: B1BASLRSX7
Dust lip: Yes
Twist: Left-hand
Installation position: Gearbox side
Application: Crankshaft
OE reference: where applicable
A standard NBR 90x110x12 seal should therefore not automatically be treated as a replacement for this specific CORTECO FPM crankshaft seal.
A generic 90x110x12 NBR radial shaft seal can have identical principal dimensions but is not technically identical to CORTECO 12012579B.
The CORTECO reference is specifically identified by:
FPM material
B1BASLRSX7 construction
additional dust lip
left-hand twist
gearbox-side crankshaft application
The material and construction should therefore be considered together with the dimensions when selecting a replacement.
Manufacturer: CORTECO
Reference: 12012579B
Base reference: 12012579
Trade Number: 82012579
EAN: 3358960125798
Product type: Crankshaft radial shaft oil seal
Design: B1BASLRSX7
Dimensions: 90x110x12 mm
d - Inside diameter: 90 mm
D - Outside diameter: 110 mm
B - Width: 12 mm
Material: FPM
Material type: Fluoroelastomer
Dust lip: Yes
Twist: Left-hand
Installation position: Gearbox side
Application: Crankshaft
CORTECO 12012579B measures 90x110x12 mm: 90 mm inside diameter, 110 mm outside diameter and 12 mm width.
CORTECO specifies FPM fluoroelastomer for this crankshaft seal.
The Trade Number is 82012579.
Yes. This reference is specified with an additional dust lip.
The seal has a left-hand twist.
It is catalogued as a crankshaft seal installed on the gearbox side.
Not automatically. CORTECO 12012579B is an FPM crankshaft seal with a specific B1BASLRSX7 construction, dust lip and left-hand twist. Matching dimensions alone do not establish equivalence.
Confirmed BMW references include 11141255012, 11141275161, 11141706785, 11141706999, 11142245364 and 1706531.
CORTECO 12012579B is an FPM B1BASLRSX7 crankshaft radial shaft oil seal measuring 90x110x12 mm. It is designed for gearbox-side installation and features an additional dust lip and left-hand twist sealing geometry. CORTECO Trade Number is 82012579. The seal cross-references multiple BMW, Citroen, Deutz, Peugeot, Porsche and Renault OE numbers.
Data sheet
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CORTECO 12012579B is an FPM B1BASLRSX7 crankshaft radial shaft oil seal measuring 90x110x12 mm. d: 90 mm, D: 110 mm, B: 12 mm. Features an additional dust lip and left-hand twist. Installation position: gearbox side. Trade Number: 82012579. Confirmed OE references include BMW, Citroen, Deutz, Peugeot, Porsche and Renault. Warehouse and Store: Lublin, Smoluchowskiego 1 Street, Building 4. 24h Shipping. Available from stock in Poland for delivery across the EU.
