3-Inch Exhaust Riser Kit – Fits Mercury/Mercruiser 4.3L, 5.0L, 6.2L MPI Engines (93320A15)
3-Inch Exhaust Riser Kit – Fits Mercury/Mercruiser 4.3L, 5.0L, 6.2L MPI Engines (93320A15) is backordered and will ship as soon as it is back in stock.
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3-Inch Exhaust Riser Kit – Fits Mercury/Mercruiser 4.3L, 5.0L, 6.2L...
Product Details
This genuine Mercury Marine/Quicksilver 3-Inch Exhaust Riser Kit is a direct-fit replacement for MerCruiser sterndrive (MCM) 4.3L, 5.0L, and V-8 (305, 350, & 377 cid) MPI engines from 2001–2002. It also fits MIE (inboard) & Tow Sports V-8 (350 & 377 cid) MPI engines from the same model years, ensuring broad compatibility for specific serial number ranges.
This kit directly replaces Mercury/Quicksilver part numbers 93320A10 and 93320A15.
- Designed for direct replacement installation in gasoline engines.
- Kit includes both full flow and restricted gaskets for versatile application.
- Engineered to meet manufacturer specifications for reliable performance.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Mercury/Quicksilver | 93320A10 | Superseded by 93320A15 |
| Mercury/Quicksilver | 93320A15 | Current part number |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For MerCruiser applications, always verify your engine's serial number falls within the specified range for proper fitment.
| Brand | Model | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| MerCruiser | MCM 4.3L MPI | 4-Stroke | 2001–2002 | 93320A15 | Serial numbers 0M300000-0M614999 |
| MerCruiser | MCM V-8 (305, 350 & 377 cid) MPI | 4-Stroke | 2001–2002 | 93320A15 | Serial numbers 0M300000-0M599999 |
| MerCruiser | MIE (inboard) & Tow Sports V-8 (350 & 377 cid) MPI | 4-Stroke | 2001–2002 | 93320A15 | Serial numbers 0M300000-0M316999 |
| MerCruiser | 6.2L MPI | 4-Stroke | 93320A15 | Serial numbers include 30620006S through 30620082S |
Technical Specs
- Product Type
- Exhaust Riser Kit (3-inch / 76mm)
- Installation
- Direct replacement
- Fuel Type
- Gasoline
- Dimensions
- 26.5 × 20.5 × 17.0 inches (673.1 x 520.7 x 431.8 mm)
- Weight
- 18.31 pounds (8.31 kg)
- Manufacturer Part Number
- 93320A15
- GTIN/UPC
- 745061543300
- Warranty
- 1 year factory warranty against defects and workmanship
- Other Technical Attributes
- Includes 2x full flow gaskets, 2x restricted gaskets
What’s in the Box
- 1 x Exhaust Riser Kit (93320A15)
- 2 x Full Flow Gaskets
- 2 x Restricted Gaskets
Installation Notes
- Disconnect the boat's battery and close the water intake seacock.
- Drain the engine coolant from the exhaust manifold and riser.
- Carefully disconnect any hoses or sensors attached to the riser.
- Remove the bolts securing the old exhaust riser to the manifold and remove the riser.
- Thoroughly clean the mating surfaces of the exhaust manifold, removing all old gasket material and corrosion.
- Select the correct gasket (full flow or restricted) based on your cooling system's requirements.
- Position the new gasket and install the new exhaust riser.
- Tighten the mounting bolts to the manufacturer's specified torque in the correct sequence.
- Reconnect all hoses and sensors.
- Re-open the seacock, refill the cooling system, and reconnect the battery.
- Start the engine and carefully check for any water or exhaust leaks around the new riser.
Troubleshooting & FAQ
How do I know if this riser kit fits my engine?
The most reliable method is to match your engine model, year, and serial number to the compatibility table. This kit fits specific MerCruiser MPI engines from 2001-2002 and certain 6.2L MPI models within defined serial number ranges. Always verify your serial number.
What is the difference between the full flow and restricted gaskets?
The choice of gasket depends on your engine's cooling system design (e.g., closed vs. raw water cooling). Restricted gaskets limit water flow and are used in specific applications to maintain proper engine operating temperatures. Consult your service manual to determine which gasket is correct for your setup.
What are the signs my exhaust riser needs replacement?
Common signs of a failing exhaust riser include overheating, water in the engine oil (milky appearance), steam from the exhaust, external rust streaks or water leakage from the riser/manifold joint, and a noticeable decrease in engine performance.
How often should exhaust risers be replaced?
In saltwater environments, it's recommended to inspect risers every 2-3 years and replace them every 4-5 years, regardless of appearance. In freshwater, they can last longer, but regular inspection (annually) is still crucial for preventing catastrophic engine damage.
Can I reuse my old mounting bolts?
It is strongly recommended to use new mounting bolts when replacing exhaust risers. Old bolts can be fatigued, corroded, or stretched, and may not achieve the correct torque, leading to leaks or failure.
Do I need to use a sealant on the gaskets?
Generally, these gaskets are designed to be installed dry. Applying sealant can sometimes cause the gasket to slip or squeeze out when torqued, creating a leak. Always follow the installation instructions provided in your engine's service manual.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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