There are several advantages of having a crankshaft rear main seal. Let’s take you step by step, type by type, and find the best crankshaft rear main seal for you.

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Our Top Picks:

Best Overall: Buy: E-Cowlboy Crankshaft Rear Main Seal READ REVIEW

Best For High Quality: Buy: Sunluway Crankshaft Rear Main Seal READ REVIEW

Best With Part Number: Buy: Bonbo Crankshaft Rear Main Seal READ REVIEW

Best For Rust Resistance: Buy: Pqy Crankshaft Rear Main Seal READ REVIEW

Best For Great Tool: Buy: Def Crankshaft Rear Main Seal READ REVIEW

Best Overall: E-Cowlboy Crankshaft Rear Main Seal

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The E-Cowlboy Crankshaft Rear Main Seal's high-end materials make sure that it ages well with use. The e-cowlboy crankshaft rear main seal will fit the newest cummins seal perfectly. If you're not 100% satisfied with your tool, simply return it for a full refund in 30 days, guaranteed with 12 months’ warranty. In addition, the seal is made from high standard carbon steel which can withstand corrosion, rust and impact, Its heavy duty construction ensures an unparalleled long lifespan.

Lastly, the e-cowlboy crankshaft rear main seal is perfect for great tool, It is fitment and has a special design.

Most buyers agree that the seal is not compatible with cat engines. Further, a few strongly agree that the seal will fit a 5.9 cummins. And, a few say that the seal is great for installing a new seal. To sum up, many customers have used the e-cowlboy crankshaft rear main seal for more than a few months without letup, and it shows no sign of giving up.

• This is great for direct replacement and has a perfect design.
• The tool worked perfectly & made the removal & installing of the seal easy.
• This is used for a 550 hp.

Best For High Quality: Sunluway Crankshaft Rear Main Seal

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Not everyone likes to purchase seals for their daily purpose, but the Sunluway Crankshaft Rear Main Seal would be an anomoly. The sunluway crankshaft rear main seal comes with great strength and durability for years of trouble-free use. Do not allow sealant to get on any part of wear sleeve or on oil seal. The tool bottoms, seal and wear ring assembly ( b ) will be correctly positioned.

Finally, the sunluway crankshaftrear mainseal is constructed with high quality carbon steel.

As a result, buyers were eager to recommend it to friends and would-be buyers.

• Wipe away any sealant that may have gotten on seal housing bore.
• This makes for easier work and it works with seal number.
• Seal (a) and wear sleeve (b) are assembled.do not separate.
• Works with seal number: re520036, dz111672, re530121, re504363, re524227, re22764, ar34682, and ar30382.

Best With Part Number: Bonbo Crankshaft Rear Main Seal

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Bonbo makes beautiful and great seals with classic and smartly chosen materials. The Bonbo Crankshaft Rear Main Seal comes with a satisfaction guarantee and it is used for high precision. Manufacturer says: If you're not satisfied with our 3164780 crankshaft rearmain seal & wear sleeve installer & seal remover tool set, simply return it for a full refund in 30 days. This specialty tool 3164780 helps reduce the risk of crankshaft seal surface damage during removal.

Lastly, the bonbo crankshaft rear main seal is made of high quality carbon steel for great strength, preventing corrosion and rust, impact resistance, sturdy and durable.

• This makes for great compatibility and it works well for high performance.
• This is perfectly suitable for cummins isx qsx isx15 isx12 diesel engines.
• Lot of satisfied buyers.

Best For Rust Resistance: Pqy Crankshaft Rear Main Seal

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Next on the list, we've got yet another seal that manages to win our hearts. It's the Pqy Crankshaft Rear Main Seal and it's widely considered as the seal that has the most suitable features. The pqy crankshaftrear main seal is difficult to install properly without a tool. Make sure this fits by entering your model number. In addition, the seal is made of high quality aluminum.

Above all, the pqy crankshaft rear mainseal is good for rust resistance and it is durable to use.

In conclusion, at the price, they believe that they got a steal of a deal with it.

• Package included: 1x front main crank seal driver+1x rearmain crank seal driver.
• Perfprmance:designed to correctly fix the front and rear main seals.
• Compatible with:01-16 gm 6.6 6.6l duramax diesel.
• Material: made of high quality aluminum.great strength, rust-resistance and durable to use.

Best For Great Tool: Def Crankshaft Rear Main Seal

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Def has been making great seals for years, thanks to a combination of clever design and appropriate materials. The Def Crankshaft Rear Main Seal is perfect for great tool and it is suitable for replacement of a 45l diesel. This rear main seal installer tool can help you install the crankshaft wear ring, rear seal and rear seal carrier effortlessly. Moreover, it is made of high quality carbon steel, impact resiatant, excellent solid and durable.

Most importantly, the def crankshaft rear main seal is automatically installed to the proper depth.

Almost all buyers found that the seal fits 6.4 rear seal.

• This works well for good quality and it works great.
• This tool is needed to prevent your seal from leaking.
• Lot of satisfied buyers.