SKU: 90400999254

MAHLE Rear Main Engine Crankshaft Seal 89-18 Ram 5.9L/6.7L Cummins

Sale price$55.63 Regular price$61.81
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 23 - Sep 28

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Description

MAHLE Rear Main Engine Crankshaft Seal 89-18 Ram 5.9L/6.7L CumminsIs it time for you to have your engine rebuilt? A worn rear main seal can lead to oil loss and potential engine damage if left unchecked. The MAHLE Rear Main Engine Crankshaft Seal is designed to restore a proper seal at the rear of the crankshaft, helping keep engine oil contained while maintaining consistent lubrication throughout the engine. Built as an OE quality replacement for 5. 9L and 6. 7L Cummins engines, it provides dependable sealing

Is it time for you to have your engine rebuilt? A worn rear main seal can lead to oil loss and potential engine damage if left unchecked. The MAHLE Rear Main Engine Crankshaft Seal is designed to restore a proper seal at the rear of the crankshaft, helping keep engine oil contained while maintaining consistent lubrication throughout the engine. Built as an OE-quality replacement for 5.9L and 6.7L Cummins engines, it provides dependable sealing performance for engine repairs, preventative maintenance, or complete rebuilds. Designed to match factory specifications, it delivers a secure fit that helps keep your engine running clean and efficiently.

Manufactured with durable, oil-resistant materials and precision-engineered sealing surfaces, the MAHLE 48384 is built to handle the high heat, pressure, and vibration common in diesel applications. The sealing lip maintains consistent contact with the crankshaft surface to prevent leaks while still allowing smooth crankshaft rotation. Built to meet or exceed original equipment standards, this rear main seal installs as a direct replacement and provides the long-term reliability needed for demanding diesel engines. Maintaining a proper seal at the crankshaft helps protect internal components and ensures your engine retains the lubrication it needs for long service life.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 90400999254

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4.3 ★★★★★
Based on 23 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
Fort Morgan, US
★★★★★ 5
Work as well as the NGK's
Bought for a 2016 Mazda 6, I had NGK's in it for 5 months and had misfires, didnt have the money to throw more NGK's at it for troubleshooting. Bought these to try and they work great so far.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
C
Verified Purchase
Christopher D. Bodirsky
Battle Creek, US
★★★★★ 4
Faulty plug? Otherwise great set
Definitely better than the old plugs that probably had 80k miles on them. The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine. Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.
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Reviewed in the United States on April 27, 2026
B
Verified Purchase
Britincali
Cuba, US
★★★★★ 5
Upgrade from OEM
After seeing a quite ludicrous $403 quote to change 4 spark plugs in a Mazda3 I decided to show my son how easy it is. These were an upgrade from OEM parts. They were gapped perfectly for the car. They took 20mins to fit and work fine.
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Reviewed in the United States on February 11, 2026
A
Verified Purchase
ANDRES FIGUEROA
Port Orchard, US
★★★★★ 5
Very good
The best quality. Runs like new again.
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Reviewed in the United States on March 12, 2026
A
Verified Purchase
Ale
Bozeman, US
★★★★★ 1
garbage spark plugs
misfired after 30 minutes of driving cylinder 4 misfire code, left me stranded on the highway with baby in car. “(9621)” at the end of description is a lie, was not compatible with my vehicle even with compatibility test.
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Reviewed in the United States on May 17, 2026

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