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Description
Full Flow Elbow Gasket – Fits MerCruiser Dry Joint V-6 & V-8 (Replaces 864547A02, 864547A1)Full Flow Elbow Gasket Fits MerCruiser Dry Joint V 6 & V 8 (Replaces 864547A02, 864547A1) This Full Flow Elbow Gasket is designed for use with MerCruiser Dry Joint Exhaust Manifolds on GM V 6 and V 8 engines, including 4. 3L, 5. 0L, 5. 7L, and 6. 2L models from 2002 and newer. It serves as a direct replacement for MerCruiser part numbers 27 864547A02 864547A02 and 27 864547A1 864547A1, as well as Sierra aftermarket part 18 0721. Includes one Full Flow
Full Flow Elbow Gasket – Fits MerCruiser Dry Joint V-6 & V-8 (Replaces 864547A02, 864547A1)
This Full Flow Elbow Gasket is designed for use with MerCruiser Dry Joint Exhaust Manifolds on GM V-6 and V-8 engines, including 4.3L, 5.0L, 5.7L, and 6.2L models from 2002 and newer.
It serves as a direct replacement for MerCruiser part numbers 27-864547A02/864547A02 and 27-864547A1/864547A1, as well as Sierra aftermarket part 18-0721.
- Includes one Full Flow Elbow Gasket
- Compatible with gas fuel type
- Installation requires Dry Joint connection
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| MerCruiser | 27-864547A02 |
| MerCruiser | 27-864547A1 |
| Sierra | 18-0721 |
Compatible Engine Models
Confirm your engine model/year in the table below. For MerCruiser owners, here9s a guide to help you identify your engine9s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | 4.3L | Various | 4-Stroke | 2002 and newer | 27-864547A02/A1 | For Dry Joint Manifold and Riser |
| MerCruiser | 5.0L | Various | 4-Stroke | 2002 and newer | 27-864547A02/A1 | For Dry Joint Manifold and Riser |
| MerCruiser | 5.7L | Various | 4-Stroke | 2002 and newer | 27-864547A02/A1 | For Dry Joint Manifold and Riser |
| MerCruiser | 6.2L | Various | 4-Stroke | 2002 and newer | 27-864547A02/A1 | For Dry Joint Manifold and Riser |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Exhaust Elbow Gasket (Full Flow) |
| Installation | Dry Joint |
| Fuel Type | Gas |
| Connection | Between exhaust manifold and riser |
| Housing Material | Composite Gasket Material |
| Dimensions | 7.87 in x 4 in (200 mm 101.6 mm) with 7/16 in mounting holes |
| Other Technical Attributes | For standard cooling with full flow configuration |
Package Contents
- 1 x Full Flow Elbow Gasket (27-864547A02, 27-864547A1)
Installation Guide
- Ensure the engine is cool and powered off before installation.
- Remove the old elbow gasket carefully from the dry joint exhaust manifold and riser connection.
- Clean the mating surfaces to remove debris and old gasket material.
- Place the new Full Flow Elbow Gasket in position between the exhaust manifold and riser.
- Align the gasket mounting holes with the corresponding holes on the manifold and riser.
- Install mounting bolts and tighten evenly to the manufacturer9s torque specifications.
- Inspect the installation for proper fit and secure connections.
- Start the engine and check for exhaust leaks around the gasket area.
Troubleshooting & FAQ
- How do I confirm this gasket fits my engine? Confirm the engine model, year, and dry joint exhaust manifold type. Check compatibility with GM V-6 & V-8 MerCruiser engines 4.3L, 5.0L, 5.7L, or 6.2L from 2002 and newer.
- What are the differences compared to OEM parts? This gasket is an aftermarket replacement built to OEM specifications using comparable-grade materials, but it is not an OEM component.
- How often should I replace this gasket? Replace the gasket whenever there are signs of wear, leakage, or during exhaust manifold servicing as per engine maintenance guidelines.
- What are common signs of gasket failure? Look for exhaust leaks, unusual noises, decreased engine performance, or visible cracks and damage on the gasket.
- OEM vs. Aftermarket? This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
- How fast do you ship and how much does it cost? We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
- What is your warranty and return policy? This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5–15 days.
- Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
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★★★★★ 5
Very thorough and efficient cleaning
Color: Black, Size: L40 Ultra Gen 2
I've been using Roomba vacuums and mops for about fifteen years now, and truly loved them. My Braava mop recently wasn't working well, so I started researching again for the best robot mop. Anytime I've done that before, it was always a Roomba product that seemed to be rated best, but this time it was this Dreame dual vacuum and mop - I hadn't even heard of Dreame. Based on reviews and price, I decided to go for it.
I am LOVING this machine! It cleans significantly more thoroughly AND faster than any Roomba I've had. My main floor is probably around 1500sq. ft. My previous Roomba took about 6 hours cleaning it. The Dreame takes just over 2 hours, and results in a noticeably cleaner floor. I have a lady that comes and cleans part of my house once a month, and she thought I must have done an extra intensive clean of my floors for an event. I hadn't told her anything about the new machine, but she noticed a significant difference in the cleanliness of my floors.
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I thought it was really strange that it didn't come with the container for the cleaning solution, but thought I'd try it for awhile just with water. So far, I haven't found a reason to pay extra for that container or the solution! Water alone is doing a thorough job!
The timer feature works very well, and I appreciate that it sends me a text notice when a particular part needs cleaning or adjustment or whatever. And it includes a link to show where that part is and what to actually do. The communication of the maintenance of the machine has been very good so far.
I used to have Roomba run daily, but I have Dreame just running three days a week, and I have cleaner floors!
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I paid $550 for this, and it has been WELL worth the money!
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Reviewed in the United States on May 2, 2026
★★★★★ 5
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I was one of those people who thought “I already have a smart TV, why would I ever need a firestick”. Boy was I wrong. If you’ve used these Smart TV UIs you know they can be notoriously laggy. This is a major upgrade visually and performance wise. Super easy to set up, and this is able to stream from Steam PC!
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Great Quality and Very Easy to Use
Configuration: Fire TV Stick 4K Plus
Super easy to set up and works really well. The streaming quality is great and the remote responds fast. I use it every day now for Netflix and YouTube with no issues.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Before Fire TV, I was an old TV Curmedgeon
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I have a Samsung Smart TV. I stream with You Tube TV. I watch Sox on the MLB app. I'm worried about getting into heaven because of all my swearing at technology. Samsung made me sign in once or twice a week, a huge task for an 84 year old using a remote clicker. YouTube TV has been nothing but a technology headache. And for an old man, I'm pretty hip with tech. Then there's my chair side JBL speaker which would often not connect. I'd have to restart my TV or re-pair it. The whole ball of wax drove me to up my IPA consumption and made me into a potty mouth. Then I got the Fire TV Stick. It's early on but it does seem to be an absolute game changer. Very user friendly. I got the HDMI USB power module and have also plugged direct into an outlet. Either is good. Right now, I'm using HDMI #3 to power my TV. Had to charge it overnight but all works well. All the technology fussing is over. No more having to sign in. No more problems navigating between live and recorded TV or to MOB and back. I'm very happy. Thank you Amazon. I think St. Pete might now let me in. Not too soon, I hope.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Excellent quality
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Absolutely fantastic. Fired right up fast and eady to set up. I just love the fire sticks and they save a huge amount of money from cable. I can watch pretty much anything I want. Great clear screen and sound, plus remote is updated. Im very happy!
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Reviewed in the United States on May 20, 2026