How to remove and replace a rear crankshaft seal without removing the oil pan or seal retainer on the Acura MDX?

Remove the driveplate. The seal can be replaced without removing the oil pan or removing the seal retainer. However, the lip of the seal is quite stiff and it's possible to cock the seal in the retainer bore or damage it during installation. Pry out the old seal with a screwdriver. Carefully pry the rear main seal out - don't damage the surface of the crankshaft or the new seal will leak. Apply multi-purpose grease to the crankshaft seal journal and the lip of the new seal, then carefully drive the new seal into place with a seal driver. The lip is stiff, so carefully work it onto the seal journal of the crankshaft. Don't rush it or you may damage the seal. Drive the seal in squarely and only until it is flush with the back of the seal plate, no further. Make sure the spring side is facing in.

Genuine Acura MDX Crankshaft Seal

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10 Crankshaft Seals found

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Acura MDX Oil Seal 41X56X7
Part Number: 91212-5MR-A01
$10.44 MSRP: $14.92
You Save: $4.48 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Seal (41X56X7) (Nok)
- Replaces: 91212-RCA-A01, 91212-RCA-A02, 91212-R70-A01, 91212-R70-A02
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Oil Seal (41X56X7)
Part Number: 91212-R70-A02
$10.44 MSRP: $14.92
You Save: $4.48 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Seal (41X56X7) (Nok) ; Oil Pump Oil Seal
- Replaced by: 91212-5MR-A01
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Engine Crankshaft Seal (80X98X8) (Nok)
Part Number: 91214-RKG-003
$34.82 MSRP: $49.73
You Save: $14.91 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Seal (80X98X8) (Nok) ; Rear Main Seal; Rear Main Seal
- Replaces: 91214-RBB-003, 91214-R70-A01, 91214-RCA-A01
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Cam Crank Seal (41X56X7) (Arai)
Part Number: 91212-R70-A01
$10.44 MSRP: $14.92
You Save: $4.48 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Seal (41X56X7) (Arai)
- Replaced by: 91212-5MR-A01
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
View related parts
Acura MDX Crankshaft Oil Seal (80X98X8) (Nok)
Part Number: 91214-RCA-A01
$34.82 MSRP: $49.73
You Save: $14.91 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Seal (80X98X8) (Nok) ; Rear Main Seal
- Replaced by: 91214-RKG-003
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
View related parts
Acura MDX Crankshaft Oil Seal (41X56X8)
Part Number: 91212-P8A-A01
$14.81 MSRP: $20.65
You Save: $5.84 (29%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Seal (41X56X8) ; Front Crank Seal; Front Crank Seal, Oil Seal
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Crankshaft Oil Seal
Part Number: 91214-P8A-A01
$13.70 MSRP: $19.57
You Save: $5.87 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oil Seal (80X98X10) (Nok) ; Rear Main Seal; Rear Main Seal
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
View related parts
Acura MDX Oil Seal (41X56X7)
Part Number: 91212-R9P-A01
$15.70 MSRP: $22.42
You Save: $6.72 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Front Crank Seal; Crankshaft Seal
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
View related parts
Acura MDX Oil Seal (80X98X8)
Part Number: 91214-R9P-A01
$15.50 MSRP: $22.13
You Save: $6.63 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Rear Main Seal
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
View related parts
Acura MDX Oil Seal (80X98X8)
Part Number: 91214-6S9-A01
$15.50 MSRP: $22.13
You Save: $6.63 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cover Oil Seal, Crankshaft Seal, Rear Main Seal
- Warranty: This genuine part is guaranteed by Acura's factory warranty.

Acura MDX Crankshaft Seal

The Crankshaft Seal of the Acura MDX is the first line of defense against oil loss. It helps prevent essential parts from grinding and overheating. The Crankshaft Seal is a round metal and rubber seal that fits on the crankshaft nose at the front of the engine. This seal grips the spinning shaft tightly yet permits it to spin relatively freely. This may sound like a simple action; however, this sealing action is what prevents engine oil from escaping past the seal. Each version of the Acura MDX has essentially the same layout as they work, so earlier units differ from today only by an incremental enhancement in material resilience. Acura MDX owners should conduct regular checks to monitor seal wear. There are no other alternatives, which means that one proven Crankshaft Seal design protects the crankcase throughout the lineup, and newer seals only better resist temperature variations and mileage wear. A weary Crankshaft Seal shows you trouble with an oily ring around the harmonic balancer or on the driveway or a dipstick dropping faster than expected. Quickly getting the Crankshaft Seal replacement for Acura MDX will help restore optimal lubrication control to the drivetrain and retain its great durability.

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Acura MDX Crankshaft Seal Parts Questions & Experts Answers

Oil Seal (41X56X7)
91212-R70-A02
Q: How to remove and replace a rear crankshaft seal without removing the oil pan or seal retainer on the Acura MDX?
A:
Remove the driveplate. The seal can be replaced without removing the Oil Pan or removing the seal retainer. However, the lip of the seal is quite stiff and it's possible to cock the seal in the retainer bore or damage it during installation. Pry out the old seal with a screwdriver. Carefully pry the rear main seal out - don't damage the surface of the crankshaft or the new seal will leak. Apply multi-purpose grease to the crankshaft seal journal and the lip of the new seal, then carefully drive the new seal into place with a seal driver. The lip is stiff, so carefully work it onto the seal journal of the crankshaft. Don't rush it or you may damage the seal. Drive the seal in squarely and only until it is flush with the back of the seal plate, no further. Make sure the spring side is facing in.