Sierra 18-1847K 3 Inch Dry Joint Exhaust Spacer Kit, Standard Cooling
Sierra 18-1847K 3 Inch Dry Joint Exhaust Spacer Kit, Standard Cooling — Product description
Sierra's 18-1847K is a 3-inch dry joint exhaust spacer kit built for standard-cooled V-6 and V-8 sterndrive and inboard engines. It raises the exhaust joint to add clearance where you need it, and it ships with the gasket, bolts, and hardware to bolt it on in one go.
If you're running a standard-cooled V-6 or V-8 with a dry joint exhaust, this Sierra spacer kit gives you an extra 3 inches of height at the exhaust riser joint. That added clearance is what helps keep water from working its way back toward the manifold on boats that sit low in the stern or idle in a following sea. It's a common upgrade and a common repair.
The kit covers 2004 to 2016 sterndrive V-6 and V-8 engines in the 305, 350, and 377 CID sizes, plus 2002 to 2016 inboard V-8 engines in 350 and 377 CID, all in Non-EC form. Standard cooling only. So if your engine runs a closed cooling system, this isn't the right kit for it.
Everything you need to make the joint comes in the box. The gasket, bolts, and hardware are all included, so you're not chasing down fasteners partway through the job. It's a straightforward bolt-on for anyone comfortable working around the exhaust risers.
Key Features
- 3 inch spacer height, adds clearance at the dry joint exhaust connection
- Standard cooling design, matches raw-water-cooled exhaust setups
- Fits 2004-2016 sterndrive V-6/V-8 (305/350/377 CID) Non-EC engines
- Also fits 2002-2016 inboard V-8 (350/377 CID) Non-EC engines
- Includes the gasket, bolts, and hardware, no extra parts to source
Why Buy from NVN Marine
- Authorized Sierra reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Sierra 18-1847K 3 Inch Dry Joint Exhaust Spacer Kit, Standard Cooling |
|---|---|
| Brand | Sierra |
| Manufacturer Part Number | 18-1847K |
| UPC | 808282383213 |
| Type | Dry Joint Exhaust Spacer Kit |
| Spacer Height | 3 inches |
| Cooling Type | Standard Cooling |
| Included Hardware | Gasket, Bolts, Hardware |
| Sterndrive Fitment | 2004-2016 V-6/V-8 (305/350/377 CID) Non-EC Engines |
| Inboard Fitment | 2002-2016 V-8 (350/377 CID) Non-EC Engines |
Frequently asked questions
What does this spacer kit do?
It raises the dry joint exhaust connection by 3 inches. That extra height adds clearance and helps keep water from backing up toward the exhaust manifold.
Will it fit my engine?
It's made for standard-cooled sterndrive V-6/V-8 engines (305/350/377 CID, 2004-2016) and inboard V-8 engines (350/377 CID, 2002-2016), all Non-EC. Check your engine's CID and year against that list before you order.
Does it work with closed cooling?
No. This kit is for standard cooling only. If your engine runs a closed cooling system, you'll want the matching closed-cooling spacer instead.
Do I need to buy gaskets and bolts separately?
Nope. The gasket, bolts, and hardware all come in the kit, so you've got what you need to make the joint.
