Direct Replacement Mercruiser 140hp 4 Cylinder Exhaust Manifold, MC-1-52390

$336.19 On Sale

Direct Replacement 140 hp Exhaust Manifold, Mercruiser, MC-1-52390
SKU: 46865
Mfg# MC-1-52390
LFS# BARMC152390
UNIT: Each
In Stock - Ships out in 1 Business Day


Quality built replacements for your rusty or cracked Mercruiser 140hp Exhaust Marine Manifold (Part No. B-52390A1) on your Mercruiser Chevrolet Engine with a Direct Replacement Mercruiser 4 Cylinder Exhaust Manifold, MC-1-52390. Barr has been building quality marine products since 1933. Manifolds by Barr are covered by a manufacturer's 3-year warranty. It is recommended that replacement manifolds be done in pairs and to also replace the risers and elbows at the same time.

Made in the USA

  • Fits Mercruiser 140 hp Chevrolet Based Engines
  • Replaces Merc # B-52390A1 for Serial # 3332138 and up
  • Manifold includes mounting hardware, gaskets and plugs

Peace of mind and power to spare! Barr Manifolds are designed to reduce back-pressure and often when replacing OEM-installed manifolds, more horsepower is achieved.

When choosing a Manifold, it is recommended to also choose the appropriate new risers / elbows. Although Manifolds such as Barr, Osco and others including original equipment often look alike, it is recommended to buy manifolds and risers as sets. Where applicable, buy replacement manifolds in pairs and be sure to include the appropriate riser / elbow. These steps will help ensure compatibility and reliable operation of your marine (more...)

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Q: I have a 3.0 liter manifold with the small carb bolt pattern mount and want an adaptor to mount the larger bolt pattern carb on. Rochestor carb. Is this available? A: There are no adapter plates available.



Unless specifically indicated otherwise, Barr Marine by EDM warrants its products against defects in workmanship and material for 1-3 years from date of purchase by the original purchaser depending on the product and the warranty included with the product.

  • Restocking charge will apply at a minimum of 25% for all product returned.
  • All Returns must be returned within 30 days of receipt of the items.
  • Some products are non-returnable, please contact us for further details.
  • Manufacturer defects reported within 30 days of receipt will be supplied a pre-paid label for return shipping upon approval.
  • Please contact Go2marine LFS Marine and Outdoor for Manufacture Defects, Returns and help with Warranties.