BOWMAN GM760 Bedford Exhaust Manifold
fits model: Marine, 300, 330.
( Brand: Bowman ), ( Manufacturer Part Number: GM760 ), ( Part Type: Exhaust Manifold ), ( Country/region Of Manufacture: United Kingdom )
Review BOWMAN Bedford Wet Exhaust Manifold fits MARINE 300 330
The Bowman GM760 Bedford Marine Exhaust Manifold is a high-performance aftermarket part designed specifically for Mariner outboard engines with model numbers 300 and 330. This exhaust manifold is engineered to provide superior durability and performance, making it an excellent upgrade for your Mariner outboard engine.
The GM760 is CNC machined from 304 stainless steel, ensuring a precise fit and exceptional strength. Its design includes four exhaust ports, each with a large 1-3/4 inch (44.45mm) diameter, which helps to increase exhaust flow and reduce backpressure. This results in improved engine performance, enhanced fuel efficiency, and a more responsive power delivery.
This exhaust manifold features a unique three-bolt flange design that provides a secure connection to the engine head. The bolts are made from high-tensile stainless steel, ensuring a strong and reliable bond between the manifold and the engine. The three-bolt design also facilitates easier installation and removal compared to traditional four-bolt manifolds.
The exhaust ports on the Bowman GM760 are equipped with reusable gasket material, which eliminates the need for costly and time-consuming gasket replacement. The gaskets are made from a high-heat, compression-molded material that can withstand the extreme temperatures and pressures generated by the engine.
The GM760 is designed to be a direct replacement for the stock exhaust manifold on Mariner 300 and 330 engines. It comes with all necessary hardware for installation, including new exhaust studs and nuts. The manifold also includes a new O-ring for the exhaust port seal.
With its high-quality materials, superior design, and ease of installation, the Bowman GM760 Bedford Marine Exhaust Manifold is an excellent choice for Mariner outboard engine owners looking to improve engine performance, durability, and efficiency.
The Bowman GM760 Bedford Marine Exhaust Manifold is a popular aftermarket option for those looking to upgrade their marine exhaust system. Here are some pros and cons to consider before making a purchase:
Pros:1. Improved Performance: The Bowman GM760 exhaust manifold is designed to improve engine performance by providing better gas flow and reducing back pressure. This can result in increased horsepower and torque.
2. Durability: The manifold is made from high-quality materials, including marine-grade stainless steel, which makes it highly durable and resistant to corrosion.
3. Easy Installation: The Bowman GM760 exhaust manifold is designed to be a direct replacement for the OEM manifold, making installation relatively straightforward.
4. Better Fit and Finish: The aftermarket manifold may offer a better fit and finish compared to the OEM part, resulting in a more polished appearance.
Cons:1. Cost: The Bowman GM760 exhaust manifold may be more expensive than the OEM part, which could be a deterrent for some buyers.
2. Compatibility: While the Bowman GM760 manifold is designed to fit a wide range of engines, it may not be compatible with all Marine Bedford engines. It is essential to ensure that the manifold is compatible with your specific engine model before making a purchase.
3. Wait Time: Aftermarket parts like the Bowman GM760 manifold may take longer to arrive compared to ordering OEM parts.
4. Customization: If you are looking for a custom exhaust system, the Bowman GM760 manifold may not offer the level of customization that a custom exhaust shop can provide.
In conclusion, the Bowman GM760 Bedford Marine Exhaust Manifold can provide several benefits, including improved performance, durability, and easy installation. However, it may be more expensive than the OEM part, and there may be compatibility issues to consider. Ultimately, if you are looking for a high-performance exhaust system for your marine engine and are willing to pay a premium, the Bowman GM760 manifold could be an excellent choice. If you are unsure about compatibility or have a tight budget, it may be worth considering an OEM replacement or consulting a marine exhaust expert.
Details:
I also have the expansion tank/heat exchange for this engine in another listing. It came off an engine that was in storage for a spare so its bit dirty, but otherwise nice condition. I don't think this manifold has been used, possibly to test run the engine, but it couldn't have long.
part #: gm760 price
- $750.00
specifications exhaussyste:
- for models: Marine, 300, 330
- brand: Bowman
- mpn: Gm760
- part type: Exhaust Manifold
- country/region of manufacture: United Kingdom
payments exhaussyste:
- other
- wallet: Apple-pay
- credit card: Mastercard
offer exhaussyste:
- started: August 26, 2025
- availability: In Stock
- quantity: 1
- options: Ship-to-home
- sold: 0
seller exhaussyste:
- rating: 100.0%
- city: Washougal, Washington
- # reviews: 3248
shipping exhaussyste:
- type: Calculated
- transit: 3-9 Days
- cost: $33.43
- class: Standard
- service: FedEx Ground / FedEx Home Delivery, USPS Ground Advantage
- carrier: FedEx, USPS
returns exhaussyste:
- policy: No Returns
general exhaussyste:
- Boat Parts > Inboard Engines Components > Exhaust Systems
- condition: Used
Bowman GM760 Is Similar To:
- Ms130-3993 Bowman Marine Exhaust Manifold (61.9% similar) Number: MS130-3993 condition: surplus - new unused. For Mitsubishi engines. Mfg: Bowman mfg. Amid Bowman marine exhaust manifold. 2 ea available...(February 16th, 2018)
- Pe 180 3483 51 Bowman Heat Manifold (41.8% similar) Fits Perkins engines...(March 28th, 2019)
- Pe180 Bowman Heat Exchanger Exaust Manifold For Perkins And (48.7% similar) Sells for 1100 bucks new. Come complete with stack tube and end caps. This is a combination heat exchange, exhaust manifold, and header tank. Just empowered my boat this year and pulled off of working Perkins...(July 28th, 2018)
- 31426-2 Bowman New Birmingham Ltd England Marine Diesel Heat Exchanger (39.7% similar) New no box never used. New other see details condition...(March 1st, 2022)
- Bowman 2327 Bedford Marine Diesel Expansion Tank Heat Exchanger 300 330 (59.8% similar) Its in good used condition, doesn't look like its ever been salt water. It came off an engine that was in storage for a spare so its bit dirty, but otherwise nice condition. I also have the wet exhaust manifold for this engine in another listing...(August 25th, 2025)
