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Description
Full Flow Elbow Gasket – Fits MerCruiser GM V-6 & V-8 Stern Drives with Risers (Replaces 27-864547A02, 27-864547A1)Full Flow Elbow Gasket Fits MerCruiser GM V 6 & V 8 Stern Drives with Risers (Replaces 27 864547A02, 27 864547A1) This full flow elbow gasket is designed for MerCruiser GM V 6 and V 8 engines (4. 3L, 5. 0L, 5. 7L, 6. 2L) manufactured from 2002 and newer. It is specifically intended for models equipped with a dry joint exhaust manifold and a standard cooling system that utilizes risers. This part is a direct replacement for MerCruiser part numbers 27
Full Flow Elbow Gasket – Fits MerCruiser GM V-6 & V-8 Stern Drives with Risers (Replaces 27-864547A02, 27-864547A1)
This full flow elbow gasket is designed for MerCruiser GM V-6 and V-8 engines (4.3L, 5.0L, 5.7L, 6.2L) manufactured from 2002 and newer. It is specifically intended for models equipped with a dry joint exhaust manifold and a standard cooling system that utilizes risers.
This part is a direct replacement for MerCruiser part numbers 27-864547A02 and 27-864547A1, as well as Sierra 18-0721. It ensures a precise fit and reliable seal to prevent exhaust and water leaks.
- Gasket Style: Full Flow (Open) gasket intended for standard cooling applications.
- Installation Type: Designed exclusively for dry joint exhaust systems that use risers.
- Included in Package: One high-grade metal exhaust elbow gasket.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number |
|---|---|
| MerCruiser | 27-864547A02 / 27-864547A1 |
| Sierra | 18-0721 |
Compatible Engine Models
Confirm your engine model/year in the table below.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | 4.3L | 4.3L | 4-Stroke | 2002 & Newer | 27-864547A02/27-864547A1 | Dry Joint Manifold with Risers |
| MerCruiser | 5.0L | 5.0L | 4-Stroke | 2002 & Newer | 27-864547A02/27-864547A1 | Dry Joint Manifold with Risers |
| MerCruiser | 5.7L | 5.7L | 4-Stroke | 2002 & Newer | 27-864547A02/27-864547A1 | Dry Joint Manifold with Risers |
| MerCruiser | 6.2L | 6.2L | 4-Stroke | 2002 & Newer | 27-864547A02/27-864547A1 | Dry Joint Manifold with Risers |
| MerCruiser | 350 MAG | 5.7L | 4-Stroke | 2002 & Newer | 27-864547A02/27-864547A1 | Dry Joint Manifold with Risers |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Exhaust Elbow Gasket |
| Installation | Dry Joint System |
| Style | Full Flow (Open) |
| Application | Standard Cooling |
| Material | Metal |
| Shape | Rectangular |
| Cooling Type | Standard Cooling |
| Exhaust Type | Dry Joint |
| Other Technical Attributes | Used with risers only |
Package Contents
- 1 x Riser Gasket (Open) (27-864547A02/27-864547A1)
Installation Guide
- Ensure the engine is completely cool and the battery is disconnected.
- Drain the engine coolant to a level below the exhaust manifold.
- Carefully unbolt and remove the exhaust riser from the manifold.
- Remove the old gasket and discard it responsibly.
- Thoroughly clean both the manifold and riser mating surfaces. Ensure they are free of any old gasket material, carbon buildup, or corrosion.
- Position the new full flow gasket onto the manifold, making sure it is correctly aligned with the bolt holes and passages.
- Reinstall the exhaust riser, ensuring it sits evenly on the new gasket.
- Tighten the riser bolts in a crisscross pattern to the manufacturer's recommended torque specifications.
- Reconnect any hoses and refill the cooling system.
- Start the engine and carefully inspect the riser-to-manifold joint for any signs of water or exhaust leaks.
Troubleshooting & FAQ
Q: How do I know if I need a "full flow" or "restrictor" gasket?
A: This full flow (open) gasket is for MerCruiser engines using a standard cooling system. Engines with a closed (freshwater) cooling system typically require a restrictor-style gasket to regulate water flow. Always verify your engine's cooling system requirements before ordering.
Q: Will this fit my MerCruiser engine if it's older than 2002?
A: No, this gasket is specifically designed for models from 2002 and newer that use the dry joint exhaust system. Pre-2002 engines typically use a different "wet joint" exhaust system and require a different gasket.
Q: What are the symptoms of a failing elbow gasket?
A: Common signs of a failed gasket include visible water leaks or drips from the joint between the manifold and riser, steam rising from the engine compartment, engine overheating alarms, or, in severe cases, evidence of water intrusion into the engine cylinders.
Q: OEM vs. Aftermarket?
A: 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.
Q: How fast do you ship and how much does it cost?
A: 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.
Q: What is your warranty and return policy?
A: 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
4.1 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Nine Month Contract
Format: Audiobook, Format: Audiobook
Nine Month Contract by Amy Daws
Mountain Men Matchmaker series #1. Contemporary romance. Small town. Can be read as a stand-alone but for completeness, this is a spin-off of Last on the List from the Wait With Me series. Additional troupes include grumpy-sunshine, 10-year-age-gap, and curvy-FMC.
At thirty-eight, Wyatt Fletcher knows what he wants from life. And that’s family. And a baby. Wyatt misses his father’s wisdom and guidance. He’s envious of his older brother Max’s family. It’s time. Sure, his brother putting an advertisement in Craig’s list for a surrogate was supposed to be a joke, but it was actually fortuitous. But twelve interviews later, Wyatt isn’t having much luck in finding the right woman.
Everly Wyatt, Wyatt’s 18 year-old niece literally runs into a woman at the fertility clinic and after talking, decides Trista Matthews is the perfect woman for Uncle Wyatt. She sets them up on a date at the Mercantile.
Trista Matthews needs to move and wants to open a wildlife rescue facility. Earning the money as a surrogate, and being able to live temporarily on the mountain is perfect for her plans. She’ll live in the renovated barn and have a place for any rescues she saves. Once she has the baby, she can walk away without any qualms. That’s what her parents did. And her sister. It’s normal in her experience to be able to walk away.
So Wyatt and Trista sign a contract and take the next steps, separately, to get her pregnant.
And then they tentatively become friends and maybe a little lust is involved.
🎧 I alternated between an ecopy and an audiobook version of this story. Two awesome dual narrators, Erin Mallon and Teddy Hamilton, bring the book to life, making it impossible to put down. Engaging, titillating, and more than a few laugh out loud moments, made this romance utterly delightful. And steamy.
I did listen to this above a speed of 1.5 to more closely match my reading speed and local conversion.
Even before this story fully ended, I downloaded a dozen more of the author’s back catalog.
Can’t wait for the next in this series in June.
The irreverence of the advertising is ridiculous yet sets the tone for the mountain man that wants his mountain retreat but also wants his family close. Perfect setup.
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Reviewed in the United States on March 18, 2025
★★★★★ 4
Heartfelt, Funny, and Deeply Moving Romance.
Format: Paperback, Format: Paperback
Amy Daws delivers a thoughtful and emotionally rich standalone with Nine Month Contract, a story that balances humour, sensitivity, and heartfelt character growth.
Wyatt Fletcher is a reclusive mountain man in his 40s who lives on his own mountain near Boulder, Colorado. Beneath his rugged exterior is a man with a deeply personal dream of becoming a father. Trista enters his life through a carefully structured surrogacy agreement, and what follows is a slow-building connection grounded in trust, mutual respect, and emotional vulnerability.
The author handles the topic of surrogacy with care and compassion, creating a narrative that feels intentional and respectful throughout. Rather than relying on shock value, the story focuses on the emotional journey of two people navigating a life-changing commitment together.
One of the strongest aspects of the book is the Fletcher family. Wyatt’s close bond with his siblings, sister-in-law, and niece adds warmth and humour, with plenty of light-hearted moments and supportive interactions. Their dynamic highlights the importance of found family and creates a welcoming contrast to Trista’s more difficult upbringing.
Trista’s passion for rescuing animals adds charm and levity to the story, while also revealing her generous heart. Her dream of running a wild animal rescue gives her character purpose and depth. The farm setting, complete with an ever-growing cast of animals, provides many memorable and amusing moments without overshadowing the emotional core of the book.
Wyatt expresses care through consistent actions rather than grand gestures, offering steady support and reliability. While their emotional pacing differs, the character development feels realistic and earned. The story addresses challenges around differing expectations of parenthood in a way that feels genuine and meaningful.
The story concludes with a satisfying resolution and a bonus epilogue that offers a glimpse into the future of the characters. Readers who enjoy emotionally grounded romance with humour, strong family dynamics, and thoughtful storytelling will likely find this book rewarding.
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Reviewed in the United States on January 6, 2026
★★★★★ 5
A Delightful and Unputdownable Read!
Format: Paperback
"Nine Month Contract" was an absolute pleasure to read. I was immediately drawn into Trista and Wyatt's story and found it to be a genuinely light and refreshing book. Seriously, I couldn't put this down!
What truly made this book shine for me was the beautiful development of the relationship between Trista and Wyatt. K.S. Wright crafts a believable and engaging connection that keeps you rooting for them from beginning to end.
However, the element I loved most was the author’s dedication to Trista’s personal growth. It was refreshing to see her character arc handled with such care. Wright allows Trista to be wonderfully vulnerable without ever compromising her strength or losing her essential self. She remains true to who she is, even as she navigates challenging circumstances, which made her a deeply admirable and relatable heroine.
✨ Tropes You'll Find in This Book:
- Forced Proximity
- Slow Burn
- Grumpy/Sunshine
- Contract/Arranged Situation
- Found Family
If you are looking for a fantastic contemporary romance with great chemistry and a compelling journey of self-discovery, look no further. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025
★★★★★ 4
New Trope for Me
Format: Kindle
The Prologue alone was the funniest thing I've read all year.
I LOVE the fact Everly gets her own pov, it allow the story to flow so smoothly. Plus she's hysterical.
I laughed so hard reading this book, I had tears in my eyes.
A surrogacy romance is a new one for me, but I went in open minded. And if anything I definitely have a new found respect for the practice. I love that Amy Daws did not glaze over the surrogacy process, and took the time to include the different practices and barriers one might encounter.
While this book can be read as standalone, I personally wished I started with Last On the List (Max's book) to get a proper introduction.
We of course know how the book would end, I still found there to be so many twist and turns. Especially when Trista had that heart to heart with her sister.
I believe this was a great start to the series, it made me look forward to the next book, which I immediately started reading.
My biggest issue I had with this story was it seemed like Trista often took advantage of Wyatt, basically from the moment she met Everly. And when confronted about anything she played the "pity me I grew up poor and unloved" card. At first it was funny, but then I'm like hmmm are you punishing this man because he grew up loved and well off. She often wants him to respect her boundaries, but could care less about his. No means no lady . She some what redeemed herself in the end, but I still struggled to connect with Trista as a whole.
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Gets the Creative Juices Flowing
Format: Paperback
I picked up this book after hearing Kim Addonizio give a reading at my college when I was an undergraduate. Creative Writing and poetry were my areas of emphasis and although we used a different textbook in my poetry class, I came to love this one. It won't give you the formal training in meter and poetic forms that another textbook might, but I love the examples and the prompts for inspiration. It's my favorite book to turn to when I feel the creative well is running dry. It's warm and funny and you feel a real presence from the authors as if you have teachers with you. I haven't met Dorianne Laux, but I have chatted with Kim Addonizio twice after readings and she was lovely. (Her readings are fantastic, by the way, and I highly recommend them!)
If you are familiar with Kim Addonizio'ss poems then you shouldn't be surprised to find a section on erotic poetry in this book. Erotic poems have a long tradition in poetry and they are not "porn" as one reviewer suggested. Sexuality and sensuality are part of life and the artistic expression of such is a special skill set. I think it's fantastic that this book doesn't sensor that.
I love the examples chosen for this book--many beautiful, contemporary poems that utilize vivid and unexpected imagery. I find them inspiring. They make me want to write and they make me want to be a better writer.
I do believe that if you are a beginner or if you are considering this book as a textbook for a class you should consider it as a supplement to a book that goes into a little more depth in certain areas, such as Writing Poems (see if you can get an older edition, if you are lucky, as I see this book has become quite expensive). But this is a fantastic little book and I love having both a hard copy to underline and put notes in and a Kindle copy to keep with me on my phone so I can have a little inspiration with me for easy access.
No matter where you are in your journey as a poet, I believe this is a wonderful book to have in your library.
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Reviewed in the United States on January 31, 2021
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