Sierra Exhaust Manifold — 47-19572
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sierra Exhaust Manifold — 47-19572
A direct-fit replacement exhaust manifold built to OEM specifications for compatible marine inboard and sterndrive engines. The Sierra 47-19572 is painted for corrosion protection and leak tested before packaging — so it arrives ready to install with confidence. At approximately 47 lbs, this is a heavy-duty cast component engineered for long-term performance in the marine exhaust environment.
Key Features
- Painted finish for corrosion resistance in the marine environment
- Leak tested prior to packaging for quality assurance
- Built to OEM fit and performance specifications
- Direct replacement for compatible engine applications
Compatibility
- Engine & Model Fitment: This center-riser manifold is built specifically for classic MerCruiser 330, 340, and 454 Magnum configurations. It serves as a direct aftermarket replacement for MerCruiser OEM part numbers 807078T08 and 807078Q07. [1, 2, 3, 4]
- Universal Applications: The manifold features an interchangeable design, meaning the exact same part number fits seamlessly on either the port or starboard side of the engine block.
Parts Desk Insights
Best use case: Exhaust manifold replacement is typically driven by external rust-through, internal cracking from freeze damage, or exhaust leaks at the riser or elbow connection. At ~21.5 kg, this is a substantial component — freight shipping may apply depending on your location; contact us before ordering if you need a shipping quote. When replacing the manifold, it is best practice to replace the exhaust riser, elbow, and all gaskets at the same time to avoid a repeat job. Confirm engine model, year, and serial number compatibility before ordering.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 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.