My Account
Shopping Cart

Sierra 18-8506 Marine Exhaust Elbow Mounting Kit for Chrysler Small Block V8

Manufacturer

Sierra

<p>For nearly six decades, Sierra has established itself as one of the marine industry's most trusted names in aftermarket engine and drive parts. Founded as a specialized marine parts manufacturer, Sierra has grown into a comprehensive supplier of replacement components, instrumentation, and accessories for both recreational and commercial boating applications. Operating from their 300,000-square-foot distribution center in Litchfield, Illinois, Sierra serves boat owners and marine technicians worldwide with an extensive catalog of parts engineered specifically for the harsh saltwater environment.</p><h3>Marine Engine Excellence</h3><p>Sierra's reputation was built on delivering precision-engineered internal engine components and drive system parts that meet or exceed OEM specifications. Their <a href="/7570-sierra-engine-gasket-set-5404">engine gasket sets</a> provide critical sealing solutions for inboard and outboard motors, while their <a href="/7570-sierra-engine-complete-assembly-15341">engine complete assemblies</a> offer comprehensive replacement options for major overhauls. Each component undergoes rigorous testing to ensure reliability in demanding marine conditions, from corrosion resistance to temperature cycling performance.</p><h3>Instrumentation and Monitoring Systems</h3><p>Accurate instrumentation is essential for boat operators to monitor engine health and prevent costly breakdowns on the water. Sierra's comprehensive line of <a href="/7570-sierra-gauges-200483">gauges</a> includes everything from fuel pressure and temperature indicators to voltmeters and trim gauges, all designed with marine-grade materials that withstand vibration, moisture, and UV exposure. Their <a href="/7570-sierra-tachometer-gauge-1488">tachometer gauges</a> deliver precise RPM readings critical for optimizing engine performance and fuel efficiency. Supporting these instruments, Sierra's <a href="/7570-sierra-gauge-resistor-47908">gauge resistors</a> ensure proper signal conditioning and accurate readings across various sensor types and engine configurations.</p><h3>Expanded Product Portfolio</h3><p>In 2022, Sierra significantly broadened its scope beyond traditional marine engine parts to encompass a wider range of boating accessories and even outdoor power equipment components. This strategic expansion brought established marine brands like Shields and Moeller under the Sierra umbrella, creating a one-stop resource for marine maintenance and replacement parts. The company now offers fuel systems, electrical components, battery charging solutions, and NMEA electronics alongside their traditional engine parts lineup.</p><h3>Quality Backed by Industry-Leading Warranties</h3><p>What sets Sierra apart in the crowded aftermarket marine parts market is their commitment to standing behind every component they manufacture. Their warranty coverage extends beyond simple part replacement—it includes shop labor, haul-out fees, towing charges, and related incidental costs should a warrantied part fail. This comprehensive protection reflects the company's confidence in their manufacturing processes and quality control standards. For boat owners facing repairs far from shore or mechanics working on customer vessels, this peace of mind is invaluable. Whether you're maintaining an outboard motor, rebuilding an inboard engine, or upgrading your boat's instrumentation, Sierra's decades of marine industry experience and commitment to quality make them a reliable choice for keeping your vessel running at peak performance.</p>

Part Number

18-8506
08/04/2036 6:57 PM
Sale Price

$24.90

1 left at this price

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-8506 Exhaust Elbow Mounting Kit is a high-quality marine engine replacement hardware kit designed to meet OEM specifications for Chrysler inboard engines. This kit provides all the necessary mounting hardware to properly secure the exhaust elbow on Chrysler Small Block V8 318–360 cu. in. engines across all models 1966 and up, accommodating both swivel and fixed exhaust configurations.

Key Features:

  • Engineered to OEM specifications for reliable, like-factory fitment
  • Compatible with both swivel and fixed exhaust configurations
  • Designed for use with Riser 18-1945, Elbows 18-1946 and 18-1913, and blocked End Plate 18-1941
  • Direct replacement for Barr CM-20-6674JP, Mallory 9-40376, and Osco 480-MK-FW
  • Backed by Sierra's lifetime warranty against defects in materials and workmanship

Sierra Marine, a Dometic brand, is a trusted leader in aftermarket marine engine components. The 18-8506 mounting kit is the correct solution for restoring a secure exhaust elbow connection on Chrysler inboard V8 powerplants, making it an ideal choice for both routine maintenance and engine rebuild projects.

OEM Cross-References: Barr CM-20-6674JP | Mallory 9-40376 | Osco 480-MK-FW

A great place from which to order! I ordered a solar panel battery charger on Wednesday and it showed up on Friday. Can't get stuff any quicker than that!

quick, did 20 min looking for problem, diagnosis then you guys for part. All done. now install, ug. Thanks D.

More ratings of customer long term experience with product would help with buying confidence. Rec'd. product: the finish on the chrome/steel Curt 22110 hitch cover is not as smooth as expected for a brand new product; looks like the surface preparation b

Only place I found that had the product I needed. Extremely satisfied!

&eth;

Fast, Easy. Thank you!

great. couple clicks on mouse and wham! its ordered.

I would not hesitate buy from Autoplicity again!!! A+++

Order shipped without delay and Autoplicity had the best price. One of the problems was I did not get order confirmation email or could not get the order details in my account. Unfortunately, I registered after placing the order because the process was not that straight forward. They could not get my order details into the account. The tracking email was received little late. I wish they improve the system to add orders to the account and display the order progress.

Nice company...Products are significantly cheaper than others and fast shipping.

Easy checkout process

Quick and easy.

The order process is simple and efficient. Shipping was quick. Price was excellent.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy