SKU: 25404053746

Reman Mercruiser 5.7L 350 Vortec Marine Longblock Engine

Sale price$2249.99 Regular price$2499.99
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USA
  • USA
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

Reman Mercruiser 5.7L 350 Vortec Marine Longblock EngineThis Reman Mercruiser 5. 7L 350 Vortec Marine Longblock Engine (Part No. 2143MSRI 4) delivers robust 330HP performance for inboard and sterndrive applications, expertly rebuilt to OEM specifications for superior reliability and corrosion resistance. Featuring precision machined cylinder heads, a forged steel crankshaft, hardened cam bearings, high capacity oil pump, and fresh gaskets throughout, this marine longblock engine restores peak power and

This Reman Mercruiser 5.7L 350 Vortec Marine Longblock Engine (Part No. 2143MSRI-4) delivers robust 330HP performance for inboard and sterndrive applications, expertly rebuilt to OEM specifications for superior reliability and corrosion resistance. Featuring precision-machined cylinder heads, a forged steel crankshaft, hardened cam bearings, high-capacity oil pump, and fresh gaskets throughout, this marine longblock engine restores peak power and efficiency to your vessel. Ideal for boating enthusiasts seeking a cost-effective replacement without sacrificing durability, the 5.7L Vortec 350 longblock supports high-RPM operation and smooth acceleration under load. Note: this engine is sold “as is” with no warranty, offering unbeatable value for experienced installers.

Part Number: 2143MSRI4
Manufacturer: MERCRUISER
Weight: 400.0000 lbs

Additional Details:
Genuine OEM Parts

Please research/ensure fitment of part to your specific vehicle before purchasing. Returns because of non-fitment are accepted with a re-stocking fee, however customer is responsible for return shipping.

Shipping:
If shipping outside the contiguous 48 states is required, reach out to [email protected] to confirm shipping details.

About Us:
Custard Core Supply provides the highest quality of new, new take off, used, and core parts. We provide a variety of gas and diesel parts to our customers. Based in Dallas, TX Custard Core Supply has been in business since 1998. If you do not see a product you are looking for on our page, please reach out!


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: 25404053746

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4.7 ★★★★★
Based on 25 reviews
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Product Reviews
B
Verified Purchase
babak abbaspour
Battle Creek, US
★★★★★ 1
Not as described does not fit
Color: Silver
Not as described does not fit no good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
C
CMAUSA
Los Angeles, US
★★★★★ 4
Do one oil change myself and it’s more than paid for.
Color: Silver, Color: Silver
It is 74 mm. It’s nicely made of cast aluminum. It has a rough cast finish so it shouldn’t be difficult to hold on to. It does fit my Lexus filter and the price is very reasonable. It also fits the oil filter on my 1999 (antique) Harley Davidson Heritage Classic. Which is the primary reason I ordered it. I don’t know this for certain but I suspect it will fit all HD EVO engines. That would be 1984 through 1998 except the Heritage which didn’t change to the 88 Twin Cam until 2000.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2025
J
Verified Purchase
Jon
Battle Creek, US
★★★★★ 1
Didnt fit my C300
Color: Silver
Didn’t fit my 2008 Mercedes C300 4matic sport. I bought another one on Amazon from a different company and it did fit. Eochi or something brand.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 6, 2025
C
Verified Purchase
Courtney & Chris
Charlottesville, US
★★★★★ 1
Does not fit Boxster. Not even 74mm
Color: Silver
This is not measuring 74mm and absolutely does NOT fit my 2003 Porsche Boxster like the Amazon compatible check says it does.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 9, 2025
W
w
Los Angeles, US
★★★★★ 1
Amazon Vehicle Tool Parts Fitting App incorrect
Color: Silver
Amazon your Vehicle fit is Wrong this tool will not work at all on 1981 240D Mercedes oil filter
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 24, 2025

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