Mercruiser 7.4 454 & 502 Exhaust Spacer Kits
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Mercury Marine / Quicksilver$470.50NEW OEM MerCruiser 3 inch spacer kit Exhaust riser kit 93320A13 is for use on MerCruiser V-6 TBI stern drive engines with 2-piece exhaust manifolds (serial number 0M614999 and below). Will also fit on MerCruiser stern drive and inboard tow sports V-8...$470.50
Mercury Marine / Quicksilver$690.14 $603.72NEW OEM MerCruiser V6 V8 Exhaust Riser spacer kit 6" 6 inch 93322A12 • For all MerCruiser center riser manifolds • All V6 and all V8 engines from early 80+ • New bolts, gaskets, 6 inch high spacers, nuts and washers Will...$690.14 $603.72
Mercury Marine / Quicksilver$379.86 $337.08NEW OEM MerCruiser 3 inch spacer kit ONLY WORKS WITH Stainless Steel ELBOWS! Includes everything in the photo: • bolts • gaskets • 3 inch riser blocks • nuts and washers$379.86 $337.08
7.4 454 & 502 Exhaust Spacer Kits
NuWave Marine carries top-quality Mercruiser 502 exhaust spacer kits for 7.4l engines that mechanics and boat owners need to upgrade their exhaust systems. Get the parts you need to keep the riser elbow at the appropriate height above the waterline and prevent water from flowing back into the riser. Mercruiser 7.4 spacer kits have OEM spacers, studs, and gaskets for your MerCruiser exhaust system. Create extra space for riser elbows and help add clearance for exhaust hose routing.
Mercruiser 454 spacer kits
Apart from water leaks into the exhaust chamber, water ingestion is a common problem in exhaust systems. Whether you have a wet or dry exhaust system, using a riser spacer should be your first step in preventing water ingestion. However, water ingestion can also occur due to a missing or broken shutter valve in the exhaust.
NuWave Marine recommends regular inspection and replacement of riser blocks as part of routine exhaust maintenance. These exhaust system inspections should be done once a year. And you should pay close attention to deteriorating riser walls that could leak water into the exhaust passage.
Mercruiser 454 exhaust spacer kits provide spacer and gasket replacements that will help avoid water leaks and water ingestion. Routine riser replacements will allow you to check on other parts in your Mercruiser exhaust system.
Mercruiser 7.4 spacer kits
Your Mercruiser 7.4 exhaust is a complex system that needs replacement parts that meet its exact specifications. The Mercruiser 502 spacer kits contain spacers and gaskets that perfectly fit between the riser and manifold. Spacer kits also come with premium-grade studs to firmly hold the riser and spacer. The Mercruiser 454 exhaust spacer kits will also raise the riser to meet the Y-pipes perfectly.
Trust NuWave Marine for Mercruiser Replacement Parts
You can browse through our inventory of premium replacement parts, from Mercruiser exhaust parts, couplers, and outdrive parts to oil change accessories. We have provided boat owners and marine mechanics with precision-engineered replacement parts for over four decades.