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SKU #: CMNS-3926126
MPN #: 3926126
Cummins Rear Main Seal 89-18 5.9L / Dodge 6.7L Cummins
Description
Is your Cummins leaking oil at the rear of the engine? It's your rear main seal that needs replacing. We offer this seal in two different options. The first, called "Rear Main Seal" is an exact replacement for the seal that's currently in your truck and a great option if your crankshaft is not worn. The second option, "Rear Main Seal with Repair Sleeve," features the same great sealing properties as the standard seal but includes a "speedy" or "wear" sleeve intended for trucks with a worn crankshaft surface to ensure a complete seal.
Enter your zip and we'll see if installation is available.
- Request quotes from local installers at checkout
- Compare options and choose the best fit for your install
About WrenchConnected
WrenchConnected is an independent installation marketplace operating in partnership with Diesel Power Products.
How it works
After checkout, we route your vehicle info and part SKU to verified installation shops near you. Local installers review the job and submit competitive bids; you pick the shop you want based on price, reviews, and availability. Your name and email stay private until you select an installer.
Pricing
You pay for the bid from your preferred shop. The full amount is shown before you confirm — installers cannot add charges without your written consent. Payments are processed securely by Stripe.
Your privacy
During bidding, shops see only your service ZIP code, vehicle year/make/model, and the part SKU — not your name, email, or address. Only the shop you select receives your contact details after payment. We never sell your personal information.
More detail at wrenchconnected.com.
About Cummins
While we are obvious supporters of the aftermarket, there are times when it does make the most sense to stick with factory Cummins components for various upgrades or repairs. While we do not carry every component, we do stock items that we feel are a good choice when making the decision to go stock or aftermarket.
If you don't see what you're after, feel free to give us a call or send an e-mail to cs@dieselpowerproducts.com and we would be happy to assist.
If you don't see what you're after, feel free to give us a call or send an e-mail to cs@dieselpowerproducts.com and we would be happy to assist.
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Overall rating: 5.0 / 5 from 1 reviews.
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Q&A
- Does the seal only option include an install tool?
- No, this is only for the seal itself, no installation tool.
- How do you know which seal you need
- If you have excessive crankshaft play, the repair sleeve is intended for trucks that have a worn crankshaft surface, to ensure a complete seal. -Mark
- Are the seals the same part # between both options? One just comes with a wear sleeve? Thanks
- The actual seal is going to be slightly different for a wear sleeve. The part number is not going to be the same. But they will fit. -Sands