SKU: 19927500563

728374-92605 Power Head Gasket Set for Yanmar 3GM30 3GM30F | JLM Marine

$133.20 $148.00
Save 10%
No.2 Bestseller on sm10m.ch >

Pay in installments of $37.00 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 30 - Sep 4

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

728374-92605 Power Head Gasket Set for Yanmar 3GM30 3GM30F | JLM MarinePower Head Gasket Set for Yanmar 3GM30 3GM30F JLM Marine This Power Head Gasket Set is engineered for Yanmar 27 HP marine diesel engines, specifically the 3GM30 and 3GM30F models (including EU variants). It provides a complete solution for top end overhaul and rebuilding applications, ensuring proper sealing and reliable performance in marine environments. This gasket set directly replaces Yanmar OEM part number 728374 92605 and Sierra part number 18

Power Head Gasket Set for Yanmar 3GM30 3GM30F | JLM Marine

This Power Head Gasket Set is engineered for Yanmar 27 HP marine diesel engines, specifically the 3GM30 and 3GM30F models (including EU variants). It provides a complete solution for top-end overhaul and rebuilding applications, ensuring proper sealing and reliable performance in marine environments.

This gasket set directly replaces Yanmar OEM part number 728374-92605 and Sierra part number 18-55503, offering a cost-effective alternative for professional mechanics and DIY enthusiasts maintaining Yanmar marine diesel engines.

  • Complete power head gasket set for comprehensive engine sealing
  • Designed for 27 HP Yanmar 3GM30 and 3GM30F marine diesel engines
  • Direct replacement for OEM and aftermarket part numbers

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number
Yanmar (OEM) 728374-92605
Sierra 18-55503

Compatible Engine Models

Confirm your engine model/year in the table below.

Brand Model Rated HP
Yanmar 3GM30 27
Yanmar 3GM30 EU 27
Yanmar 3GM30F 27
Yanmar 3GM30F EU 27

Technical Specifications

Specification Value
OEM Part Number 728374-92605
Aftermarket Cross-Reference Sierra 18-55503
Engine Type Marine Diesel
Engine Power 27 HP

Package Contents

This package includes the following component:

  • 1 × Power Head Gasket Set (complete set for engine overhaul)

Installation Guide

  1. Disconnect the battery and allow the engine to cool completely before beginning work.
  2. Remove the valve cover, exhaust manifold, and any other components obstructing access to the cylinder head.
  3. Carefully unbolt and remove the cylinder head, keeping track of bolt locations and torque sequences.
  4. Clean all mating surfaces thoroughly, removing all traces of old gasket material and carbon deposits. Use a plastic scraper to avoid damaging metal surfaces.
  5. Inspect the cylinder head and block for warping, cracks, or damage; resurface if necessary.
  6. Place the new head gasket onto the engine block, ensuring proper alignment with dowel pins and bolt holes.
  7. Carefully position the cylinder head back onto the block, aligning it with the gasket and dowel pins.
  8. Install head bolts and torque them to manufacturer specifications in the correct sequence (consult your Yanmar service manual).
  9. Install remaining gaskets from the set according to their respective positions (valve cover, manifold, etc.).
  10. Reassemble all removed components in reverse order of disassembly.
  11. Refill coolant and engine oil as needed, then reconnect the battery.
  12. Start the engine and check for leaks; allow it to reach operating temperature and verify proper operation.

Troubleshooting & FAQ

Q: How do I confirm this gasket set fits my Yanmar engine?
A: Cross-reference your engine model with the compatibility table above. This set fits 3GM30 and 3GM30F models (including EU variants) rated at 27 HP. Verify your original part number matches 728374-92605 or Sierra 18-55503.

Q: What's included in the power head gasket set?
A: The set includes all necessary gaskets for a complete power head overhaul, including head gasket, valve cover gasket, and associated sealing components required for top-end rebuilding.

Q: When should I replace the head gasket on my Yanmar diesel?
A: Replace the head gasket if you notice coolant in the oil, white exhaust smoke, overheating, loss of compression, or external coolant leaks. Always use new gaskets during any cylinder head removal or engine overhaul.

Q: Do I need any special tools or sealant for installation?
A: You'll need a torque wrench and the proper torque specifications from your Yanmar service manual. Most gaskets install dry, but check your manual for any specific sealant requirements on certain components.

Q: What are the signs of a failing head gasket?
A: Common symptoms include coolant loss with no visible external leaks, milky or frothy oil, overheating, rough idle, white exhaust smoke, and loss of power. Address these issues promptly to prevent engine damage.

Q: Is this an OEM or aftermarket part?
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:
  1. 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
SKU: 19927500563

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 24 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
H
Verified Purchase
Hannah Durham
Bozeman, US
★★★★★ 5
this book set my soul ablaze! <3
Format: Paperback, Format: Paperback
"i had never really cared about the weather before, but now, clear skies meant everything to me, and i was grateful to see another calm morning." this book. this book! i loved the last storm so much. the writing style. the descriptions. the world-building. the characters. the plot twists. the tropes. the sexual tension. the—everything. everything was magic. the last storm follows our two main characters, ara and rogue, giving us dual POV from both characters (which i loved, btw). ara, a human girl who has been locked away in her father’s estate most of her life, just wants to see the world. all she dreams of is seeing what else is out there. but when her father announces her engagement, she knows that dream will become nothing more than just that—a dream. rogue, the fae king, is tired of the attacks being rained down on his people. in hopes of finding out the human king adon’s secrets, rogue infiltrates auryna’s borders. in his last resort to gain information, he visits the local pub. to his surprise, the general’s precious only child is sitting at the bar, drink round after round of mead. now he just needs to figure out how to take her without anyone noticing. first and foremost, let’s talk about the endless list of my favorite tropes and aspects that this book had. ›› enemies to lovers ›› fated mates ›› one bed ›› the chosen one ›› elemental magic ›› actually good and shocking plot twists!!! ›› badass female lead ›› morally-grey love interest ›› fae/human war ›› force proximity ›› touch her and die ›› who did this to you? ›› captor/captive ›› praise k!nk (panting profusely) “you are entirely the opposite of everything that i am, and i would gladly wear your shackles if it meant i could have you.” it’s been a long while since i read a book i liked this much. but i just loved this book. it set my soul ablaze. thank you to the author for writing this beautiful story and for blessing me with an eARC! i loved it so much that i immediately bought the paperback upon release! every aspect of this book was just beautiful. i was blown away by the way the world was described, the way feelings were portrayed, the way the elements were used in the fae’s magic. it just—AHHH! i just absolutely adored it all. i cannot wait for the second book to release next year! also the way he calls her “little storm” sets my heart on fire. this was a fast-paced read and if you are a lover of acotar, fbaa, deal with the elf king, or any other similar books, then please stop everything you’re doing and read this book right now. you won’t regret it. thank you again, jd linton, for giving me the privilege of reading your arc and for blessing this world with the world you created. <3 "something about him pulled me in, like a moth to a flame, and it felt as if i was just waiting for the inevitable burn that came with flying too close to the fire."
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 15, 2022
S
Verified Purchase
Sean
Massapequa, US
★★★★★ 4
Fun, both heartwarming and heartbreaking
Format: Kindle
Only my second first person written selection, I am still getting used to that aspect, but unlike my first, I enjoyed that the story was told through both MCs. A great enemies to lovers, forced proximity, fated love etc, that resonated to me. There were some small twists that I could see coming, but also a few that I didn’t quite see until the characters were also seeing. Personally, I am more interested in the story than the spice, but with that said, it was well seasoned! I am kind of new to the spice world so I can’t say for sure how this would rate, but it definitely had some heat. I am very glad I happened across this author, and I do plan on also reading the next book….if nothing else, just to see for myself the “transformation” of the characters I’ve grown to love!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2024
H
Verified Purchase
Havinne Akins
Chelsea, US
★★★★★ 5
😍😍 BEST DEBUT NOVEL EVER
Format: Paperback
I’m having trouble finding accurate words to describe the way this book made me feel, but I am going to do my best. To start off with basic elements, the character and world building are phenomenal. I feel a strong bond to not only the two main characters, Ara and Rogue, but to each and every character introduced throughout the book. The author did a stellar job of giving each of them unique personhood. All of the scenes are beautifully described. So much so that throughout the entirety of the book, I could see every scene: the towns, the castles, the meadows, the landscape. I have had difficulty with this and with distinguishing between outlying characters while reading in the past, but I did not have to think to remember details of world or character building because they flowed naturally within the story and were described well. I have read book series before that made me want to be a part of that world, but I actually felt like I got to step into Auryna and Ravaryn! The plot twists!! Although this is not a suspense novel, it still had me on a rollercoaster of emotions and on the edge of my seat from beginning to end. I haven’t cried actual tears over a book since I was in high school (and I’ve read a LOT). This book finally broke the floodgates in the final few chapters. Multiple times. And we love a good cliffhanger. It truly made me FEEL. THE SPICE is a solid 3.5/5. Some of the scenes had me flushed, some had me taking notes, some just had my jaw slack and my mouth hanging open. Bravo, JD Linton, bravo. The relationships: friendships, family, romantic, ALL of the relationships in this book have so much meaning. The author does a great job at making you feel the love, the anger, the peace, the frustrations, the safety, the familiarity, etc. between the characters. Ara and Rogue. I can not say enough and I also do not want to say too much. Just know that I feel like I know them both, to their core. I know what their childhood looks likes, their darkest moments, their biggest fears, their dreams and passions, what they want in life… The POV switches were seamless. I am so happy this author decided to let us see from both sets of eyes. I can not wait for book two after that cliffhanger. And there is SO much potential for at least one prequel, I can’t wait to see where this author goes! I hope this series continues and flourishes. Fingers crossed!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2022
T
Verified Purchase
Tracy and Christina
Battle Creek, US
★★★★★ 5
Amazing!
Format: Kindle, Format: Kindle
This book was phenomenal, I devoured it within a few days! For this being a debut novel, it is fantastic and I would’ve thought the author was a seasoned author. I have zero complaints about this book. Let me start by saying that the world building was phenomenal. I could picture everything in my head because of how detailed it was — that’s how good it was written. And I absolutely love the “captive/captor” trope so much, it’s become one of my favorite tropes, so I was pleasantly surprised to see that this book had that. I loved the banter between Rogue and Ara — they’re both snarky and witty, plus with the romantic tension, it made the dialogue that much better. Speaking of romantic tension, yes there is spice but not so much of it that it overrides the plot, which I loved. For me, this would probably be on the 3/5 level of spice. This book had a ton of plot twists and I thoroughly enjoyed it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 13, 2024
R
Verified Purchase
R Spires
Alexandria, US
★★★★★ 4
High on Tropes and Satisfaction
Format: Kindle
This is a great Romantasy book full of action, adventure, and everything you look for in this genre. I won’t lie: it does kinda feel like the author found every common trope from every successful book of this kind and threw them all into this novel. But if it ain’t broke, don’t fix it. Especially in romance, there’s a large audience who has specific expectations, and they want them every time. Nothing wrong with that and many times I’m one of them. I have no idea what defines a spoiler honestly, so spoiler alert!!!!!!! Tropes include: Only one bed at the inn/bar Dissatisfaction with life before hunk appears Lost royalty The chosen one Montage of dress up time followed by shocked hunk Forbidden romance between two from rival peoples Power that cannot be controlled, simply guided/asked Gathering intel at the inn/bar FMC who knows how to fight/use weapons well There’s probably more but no need to list them all. Good story and I would recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 14, 2024

recommand products

Väska Sparco till Overall
130.00
GSB Vanilla Premium Dhoop Cones with Stand Holder in Box | Dhoop Cones | No Charcoal | No Bamboo
124.50
Lilliput A12 12.5" 4K HDMI Monitor
49027.50
Tuff Jug Snabbtank 20L Vit ripper kork svart (Gen 3)
382.50
Bosch IP66 Surveillance Cabinet for Select Dome Camera (24VAC)
17682.50