MERCRUISER 10-43749 Set Exhaust Riser Screw Bolt

( Brand: Mercruiser ), ( Manufacturer Part Number: 10-43749 ), ( Part Type: Exhaust Screw Bolt ), ( Country Of Origin: United States )

Review MERCRUISER Mercury Set Of Exhaust Riser Screw Bolt

The Mercruiser 10-43749 Mercury Set Exhaust Riser Screw Bolt is an essential component for Mercury outboard engines, specifically designed for use with exhaust risers. This set comprises a collection of high-quality screw bolts, engineered to provide a secure and reliable connection between the engine exhaust system and the risers.

Each bolt in this set is manufactured from premium materials, ensuring both durability and corrosion resistance. They are specifically engineered to withstand the harsh marine environment, making them an ideal solution for boat owners seeking dependable performance from their exhaust system.

The screw bolts come in a standard length, ensuring they will fit most Mercury outboard engines with exhaust risers. They feature a hex head design, making them easy to install and tighten using standard socket wrenches or torque wrenches. This not only saves time during installation but also allows for precise torque application, ensuring a secure and long-lasting connection.

The set includes multiple bolts to accommodate various engine configurations, providing flexibility for installation on both port and starboard sides. Additionally, the bolts are sold in a convenient set, eliminating the need to purchase individual bolts, making this an economical choice for boat owners.

In summary, the Mercruiser 10-43749 Mercury Set Exhaust Riser Screw Bolt is an essential accessory for outboard engine owners, designed to provide a secure and reliable connection between the engine exhaust system and the risers. Manufactured from premium materials, these bolts are engineered to withstand the harsh marine environment, ensuring dependable performance and longevity. With a hex head design and multiple bolts included in the set, this product offers both convenience and value for boat owners.

Pros and Cons of Buying Mercury Replacement Exhaust Riser Screw Bolt (Mercruiser 10-43749)

The Mercury 10-43749 exhaust riser screw bolt is a crucial component for marine engines. It's essential to understand the benefits and potential drawbacks before making a purchase. Here's a detailed analysis of the pros and cons:

1. OEM Part: This bolt is a genuine Mercury replacement part, ensuring a perfect fit and seamless integration with your marine engine.

2. High-Quality Material: The bolt is made from high-strength materials, providing durability and resistance to corrosion and wear, ensuring long-lasting performance.

3. Easy Installation: The bolt is designed to be a direct replacement, making the installation process simple and straightforward.

4. Improved Performance: A worn-out or damaged exhaust riser screw bolt can negatively impact engine performance. Replacing it with a new one can help restore optimal engine efficiency.

5. Peace of Mind: By using a genuine Mercury replacement part, you can have confidence that you're investing in a reliable and trustworthy solution.

1. Cost: Original equipment manufacturer (OEM) parts, like the Mercury 10-43749 exhaust riser screw bolt, can be more expensive than aftermarket alternatives.

2. Availability: Depending on your location and the availability of Mercury dealers, it might take some time to source this part.

3. Limited Customization: As this is an OEM part, there may be no option for customization or additional features.

The Mercury 10-43749 exhaust riser screw bolt is an essential component for your marine engine, ensuring optimal performance and longevity. Although it comes with a higher price tag compared to aftermarket alternatives, the benefits of using a genuine OEM part, such as the high-quality materials, easy installation, and improved performance, often outweigh the cost. Additionally, the peace of mind that comes with investing in a reliable and trustworthy solution is invaluable. Therefore, we recommend investing in a Mercury replacement exhaust riser screw bolt for your marine engine.

Details:

All are fully functional. These were acquired from dealer inventory buy out that was going of business. The part number for these screws is 10-43749. The bagged one is no longer available but pic left up for reference.

These were used for many years from the 1980well into 2000on 4.3, 5.0, and 5.7 engines both carburetors, TBI, Multipart, configurations. They may also be used on other engine sizes and years as well. Listed here is a NEW Lot of 4 Mercury / Mercruiser Exhaust Riser Bolt Screw. They are stored in a climate controlled parts room to prevent any further pitting.

Factory Lactate added to the threads is all intact as seen in pictures. Compared them next to a new one in bag so you can see the are indeed OEM. These are all Genuine OEM Mercruiser Mercury parts NOT cheap Chinese aftermarket replacements. All are 100% new and never installed on any engine.

Some bolts have surface pitting on them especially the hex as well some scuffing, staining, etc.

part #: 1043749 prices

• $274.00-$275.50

specifications exhaussyste:

• for makes: Mercury
• brand: Mercruiser
• mpn: 10-43749
• part type: Exhaust Screw Bolt
• country of origin: United States

payments exhaussyste:

• other
• wallet: Google-pay
• credit card: Discover

offer exhaussyste:

• sold: 0
• availability: In Stock
• started: March 4, 2026
• quantity: 7
• options: Ship-to-home

returns exhaussyste:

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

shipping exhaussyste:

• service: USPS Ground Advantage
• transit: 5-10 Days
• type: Fixed
• carrier: USPS
• cost: $0.00
• class: Standard

general exhaussyste:

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

seller exhaussyste:

• rating: 100.0%
• # reviews: 804
• city: Oviedo, Florida

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