Shopping Cart

Your cart is empty.

Your cart is empty.

Set of 2 Cast Iron Exhaust Riser Elbows with Gaskets & Bolts - Replaces 3855270, 3850456, 913784, 4.3L, 5.0L, 5.7L, 5.8L 305, 350, V6, V8 Engines, 4” Outlet - 7.75” Tall Riser by FASWORX

5.0 Write Review
Free shipping on orders over $29.99

$400.00

$ 99 .00 $99.00

In Stock

1.Size:Set Of 1


About this item

  • Compatibility: Fits all 1994 and late 4.3L and 5.0L Penta Engines. Also fits various 1989 to 1994 OMC engines. Please check your parts and compare to ensure it is similar.
  • Replaces: Penta part numbers 3855270 OMC 913784, 3855270, 3850456 Osco 50456, 5045A BARR OMC-20-913784 Sierra 18-1909-1, GLM 51330
  • Included: Get back on the water in no time. Your boat exhaust riser elbow kit includes bolts and gaskets for seamless installation whether you have the tools or are headed to the shop.
  • Fitment: 7.75 inch risers (sometimes called 7.8 inches or 8 inch risers). Accepts all original factory accessories and fittings. These are identical to the factory riser.
  • Premium Promise: Trusted by boaters and mechanics alike, the FASWORX cast iron exhaust riser offers OEM standards and reliable results at a fraction of the cost for DIY repair or sourcing parts.


Engineered for Excellence and Efficiency
Enhance your engine performance with the FASWORX cast iron exhaust riser elbow, exhaust gaskets, and bolts—a premium aftermarket solution for your Penta 4.3L, 5.0L engine (1994 and newer, fits some older models). These robust exhaust risers are engineered to match OEM specs, ensuring a perfect fit for your exhaust system and model numbers 3855270, 3850456, and 913784. Each riser has strong cast iron and a protective coating to ensure that every riser will withstand deterioration in both freshwater and saltwater environments.
Why Cast Iron Is the Choice for Serious Boaters?
Compared to carbon steel or stainless steel, your cast iron Penta riser kit is superior in durability, longevity, performance, and more. It can improve your engine's exhaust flow, translating to better fuel efficiency and enhanced output. Cast iron can also withstand overheating and vibration so you can trust there is smooth sailing ahead and a reduced risk of cracks and gasket blows. Whether you enjoy laid-back cruising, fishing excursions, or thrilling watersports, your FASWORX risers will optimize your engine for power and efficiency.
Trust FASWORX for a Job Well Done
Set sail with renewed confidence and enhanced engine performance. Decades of on-water experience inform our expertly engineered marine parts designed for mechanics and DIY boaters alike, keeping your engine in peak operating condition.
Don't let engine troubles keep you ashore; choose FASWORX parts and enjoy a smoother, more reliable experience.