1. Exhaust Systems Inboard Engines Components For Sale
  2. sku: 8233774343953853
  3. BFO L9SIM5

BFO L9SIM5 Exhaust Manifold Kit Gm 5.0L 5.7L V8

fits model: Marine, 305, 350, Mercruiser. year: 1983–2002.

L9sim5 Bfo 2pcs Marine Exhaust Manifold Kit For Mercruiser Gm 5.0l 305 5.7l 350 V8 1983-02

( Brand: Bfo ), ( Manufacturer Part Number: L9SIM5 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Color: Black ), ( Engine: 5.0l/5.7l/6.2l ), ( Features: High Quality Material, Easy Installation ), ( Fitment: For Mercruiser Gm 5.0 ), ( For Mcm/mie Gm V8: 305, 350, 377 Cid Engines, For Mercruiser Most Small Block V-8 Engines 5.0l/5.7l/6.2l ), ( Fitment Type: Direct Replacement ), ( Fuel Type: Gasoline ), ( Items Included: As Pics Shown ), ( Material: Cast Iron ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Oe/oem Part Number: 860246a10, 860246a15, 860246a3, 860246a7, 860246a9, 860336a2, 860246q11, 87114a19, 9-40507, 18-1953-2, 1819532 ), ( Type: Exhaust Manifold ), ( Warranty: 1 Year )

Review BFO 2pcs Exhaust Manifold Kit Gm 5.0l 5.7l V8 fits MERCRUISER MARINE 305 350 1983–2002

Introducing the BFO L9SIM5 Marine Exhaust Manifold Kit, specifically designed for Mercruiser GM 5.0L, 305, 5.7L, and 350 V8 engines from the year 1983 to 2002. This exhaust manifold kit is an essential upgrade for your marine application, ensuring optimal engine performance and longevity.

The BFO L9SIM5 Exhaust Manifold Kit is meticulously engineered using high-quality materials that withstand the harsh marine environment. Each manifold is crafted from heavy-duty cast iron for unmatched durability and strength. The manifold's design ensures a proper seal for improved exhaust gas flow, resulting in increased power and torque.

The kit includes four exhaust manifolds, one for each cylinder head, and all necessary hardware for installation. Each manifold features large, 1 3/4-inch (44.45mm) exhaust ports that provide ample space for the exhaust gases to exit the engine efficiently. These large ports also help to reduce backpressure within the exhaust system, which in turn enhances engine breathing and overall performance.

The BFO L9SIM5 Marine Exhaust Manifold Kit is designed to replace the original equipment manifolds, making it an excellent choice for boat owners seeking to upgrade their exhaust system. The kit is easy to install and comes with clear, step-by-step instructions to ensure a hassle-free installation process.

By upgrading to the BFO L9SIM5 Marine Exhaust Manifold Kit, you can expect improved engine performance, enhanced durability, and increased power output from your Mercruiser GM 5.0L, 305, 5.7L, and 350 V8 engine. This exhaust manifold kit is an investment in the longevity and efficiency of your marine engine, making it a must-have for any serious boat owner.

The BFO L9SIM5 Marine Exhaust Manifold Kit is a replacement option for Mercruiser GM 5.0L, 305, 5.7L, 350 V8 engines from 1983 to 2002. Here are some potential advantages and disadvantages to consider before making a purchase.

Advantages:

1. Improved Performance: This exhaust manifold kit is designed to enhance the engine's performance by reducing backpressure and increasing the flow of exhaust gases.

2. Durability: The kit is constructed using high-quality materials that can withstand the harsh marine environment.

3. Easier Installation: The BFO L9SIM5 kit includes all the necessary hardware for installation, making the process simpler and more convenient.

4. Better Fuel Efficiency: The improved exhaust flow can lead to better fuel efficiency, saving you money in the long run.

Disadvantages:

1. Cost: This kit may be more expensive than stock exhaust manifolds, which could be a deterrent for some buyers.

2. Potential Fitment Issues: While this kit is designed to fit a wide range of engines, there may be some variations in engine design that could cause fitment issues. It's essential to ensure that the kit is compatible with your specific engine model before making a purchase.

3. Noise Level: The improved exhaust flow may result in a louder exhaust note, which some users may find unwelcome.

Conclusion:

The BFO L9SIM5 Marine Exhaust Manifold Kit offers several advantages, including improved performance, durability, easier installation, and better fuel efficiency. However, it also comes with potential disadvantages, such as a higher cost, potential fitment issues, and increased noise level. Ultimately, the decision to purchase this kit depends on your specific needs, budget, and preferences. If you value improved performance and durability and are willing to pay a premium, this kit may be a worthwhile investment. However, if you have fitment concerns or prefer a quieter exhaust note, you may want to consider alternative options.

Recommendation:

Before making a purchase, ensure that the BFO L9SIM5 Marine Exhaust Manifold Kit is compatible with your specific engine model. Research and read reviews from other users to gauge their experiences with the product, including any potential fitment or installation issues. If the benefits align with your needs and preferences, and you're willing to pay the premium, this kit could be a worthwhile investment for enhancing your Mercruiser engine's performance.

Details:

Product for: Direct for. Reliable Leak-Proof Sealing, Machined flanges with uniform bolt patterns ensure tight seals standard aftermarket gaskets sold separately. Our product is a wet joint manifold. us Facebook Account: .

Does not for newer dry-joint manifolds. As Picture Shown. Type: Exhaust Manifold Kit. For Mercruiser GM 5.0 305 and 5.7 350 Engines from the Early 1980to 2002.

Aftermarket Direct Fit for OE Replacement, Precision-engineered to match specs straightforward bolt-on installation no major modifications required most applications. 860246A10,860246A15,860246A3,860246A7,860246A9,860336A2,860246Q11,87114A19,9-40507,18-1953-2,1819532. Material: Cast Iron. For MerCruiser 5.0L 305 ci, 5.7L 350ci, 6.2L 377ci, and most small block V-8 Engines.

Condition: Brand New. Package included. Efficient Heat Dissipation, Natural thermal conductivity helps manage engin temperatures and protect adjacent components. Color: Black.

For MCM/MIE GM V8 305, 350, 377 CID Engines 1983 - 2002. OE/Part number. Rugged Performance for Demanding Vehicles, Built trucks, Suva, and high-mileage cars delivers consistent strength under heavy loads harsh conditions.

specifications exhaussyste:

  • for models: Marine, 305, 350, Mercruiser
  • for years: 1983-2002
  • brand: Bfo
  • mpn: L9sim5
  • california prop 65 warning: California Prop 65 Warning
  • color: Black
  • engine: 5.0l/5.7l/6.2l
  • features: High Quality Material, Easy Installation
  • fitment: For Mercruiser Gm 5.0
  • for mcm/mie gm v8: 305, 350, 377 Cid Engines, For Mercruiser Most Small Block V-8 Engines 5.0l/5.7l/6.2l
  • fitment type: Direct Replacement
  • fuel type: Gasoline
  • items included: As Pics Shown
  • material: Cast Iron
  • note: No Instruction Included
  • notice: This Is Aftermarket Replcement Part
  • oe/oem part number: 860246a10, 860246a15, 860246a3, 860246a7, 860246a9, 860336a2, 860246q11, 87114a19, 9-40507, 18-1953-2, 1819532
  • type: Exhaust Manifold
  • warranty: 1 Year

seller exhaussyste:

  • # reviews: 20881
  • city: Rowland height, California
  • rating: 99.3%

general exhaussyste:

  • condition: New
  • Boat Parts > Inboard Engines Components > Exhaust Systems

offer exhaussyste:

  • availability: In Stock
  • best offers: True
  • options: Ship-to-home
  • sold: 0
  • quantity: 10
  • started: March 22, 2026

shipping exhaussyste:

  • type: Fixed
  • transit: 3-6 Days
  • cost: $0.00
  • class: Standard
  • service: Standard

returns exhaussyste:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller

payments exhaussyste:

  • credit card: Discover
  • wallet: Paypal
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for models: marine, 305, 350, mercruiser, for years: 1983-2002, california prop 65 warning: california prop 65 warning, engine: 5.0l/5.7l/6.2l, features: high quality material, easy installation, fitment: for mercruiser gm 5.0, for mcm/mie gm v8: 305, 350, 377 cid engines, for mercruiser most small block v-8 engines 5.0l/5.7l/6.2l, fitment type: direct replacement, fuel type: gasoline, items included: as pics shown, note: no instruction included, notice: this is aftermarket replcement part, oe/oem part number: 860246a10, 860246a15, 860246a3, 860246a7, 860246a9, 860336a2, 860246q11, 87114a19, 9-40507, 18-1953-2, 1819532, type: exhaust manifold, warranty: 1 year,
category: boat parts > inboard engines components > exhaust systems, color: black, material: cast iron, sku: 8233774343953853,
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