Manifold replaces Mercury 860235A03
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
This Sierra exhaust manifold is a replacement for Mercury 860235A03, built for the MerCruiser 3.0L/LX 1990 & newer exhaust manifold application.
Key Features
- Replaces Mercury 860235A03
- Sierra manifolds are painted, packaged, and leak tested.
- Exhaust manifold replacement part for the specified MerCruiser application
Product Compatibility
- MerCruiser 3.0L/LX (1990 & Newer) exhaust manifold application
Product Details
- Replacement/Reference: Mercury 860235A03
- Replacement Part: Sierra 47-19661 (also shown as Sierra 18-19661)
- Leak-tested and packaged/manifold prep: painted, packaged, and leak tested
Parts Desk Insights
Best Use Case: Use this manifold when you’re addressing an exhaust manifold wear issue or replacing a Mercury 860235A03 component with the Sierra replacement option.
Common Issues: During replacement, confirm mating surfaces and ensure all related exhaust manifold gaskets and sealing surfaces are in good condition to help prevent exhaust leaks and rework.
Related Products & Accessories
- Browse Exhaust Mufflers & Manifolds - Find related exhaust components, gaskets, and hose/muffler accessories for your exhaust system service.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.