SKU: 38723430488

Mercruiser Manifold Assembly Connector Kit – Fits Alpha One Gen 2 and Bravo I/II/III Stern Drives (Replaces 8M0137703, 98825A4, 8M0080805)

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Description

Mercruiser Manifold Assembly Connector Kit – Fits Alpha One Gen 2 and Bravo I/II/III Stern Drives (Replaces 8M0137703, 98825A4, 8M0080805)Mercruiser Manifold Assembly Connector Kit Fits Alpha One Gen 2 and Bravo I II III Stern Drives This manifold assembly connector kit is designed for Mercruiser Alpha One Gen 2 and Bravo I, II, and III stern drives from 1983 and newer. It provides a reliable connection for the stern drive trim system, linking the hydraulic trim lines. This component is a direct replacement for several OEM and aftermarket parts, ensuring broad compatibility for repairs

Mercruiser Manifold Assembly Connector Kit – Fits Alpha One Gen 2 and Bravo I/II/III Stern Drives

This manifold assembly connector kit is designed for Mercruiser Alpha One Gen 2 and Bravo I, II, and III stern drives from 1983 and newer. It provides a reliable connection for the stern drive trim system, linking the hydraulic trim lines.

This component is a direct replacement for several OEM and aftermarket parts, ensuring broad compatibility for repairs and maintenance.

  • Installation: Connects the hydraulic lines within the stern drive's power trim system.
  • Housing Material: Constructed from durable aluminum for corrosion resistance.
  • Included Components: Comes with the plate, junction block body, gaskets, lockwashers, and mounting bolts for a complete installation.

Part Number Cross-Reference

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

Brand Part Number
Mercury / Quicksilver 8M0137703
Mercury / Quicksilver 8M0080805
Mercury 98825A4
Mercury 98825A12
GLM 21970
Sterndrive Engineering 9F-116-17K

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercruiser owners, here’s a guide to help you identify your engine’s 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 Alpha One Gen 2 Various Various 1983 and up 98825A4/8M0137703 Stern drive trim connector
Mercruiser Bravo I Various Various 1983 and up 98825A4/8M0137703 Stern drive trim connector
Mercruiser Bravo II Various Various 1983 and up 98825A4/8M0137703 Stern drive trim connector
Mercruiser Bravo III Various Various 1983 and up 98825A4/8M0137703 Stern drive trim connector
Mercruiser R/MR Various Various 1983 and up 98825A4/8M0137703 Stern drive trim connector
Mercruiser MC-1 Various Various 1983 and up 98825A4/8M0137703 Stern drive trim connector

Technical Specifications

Specification Value
Product Type Manifold Assembly Connector Kit
Installation Stern drive trim system connection
Connection Hydraulic trim line connection
Housing Material Aluminum
Housing Color Silver/Metallic
Fitting Type Threaded manifold assembly
Other Technical Attributes For stern drive trim systems

Package Contents

  • 1 x Plate
  • 1 x Junction Block Body
  • 2 x Gaskets
  • 2 x Lockwashers
  • 2 x Mounting Bolts

Installation Guide

  1. Safety First: Disconnect the boat's battery to prevent any electrical accidents.
  2. Access the Connector: Locate the existing manifold connector assembly on the transom. Access may require tilting the stern drive.
  3. Prepare for Fluid: Place a drain pan and absorbent rags under the hydraulic lines to catch any spilling trim fluid.
  4. Disconnect Lines: Carefully loosen and disconnect the hydraulic trim lines from the junction block body.
  5. Remove Old Assembly: Unfasten the two mounting bolts holding the old manifold assembly and remove it, along with the old gaskets.
  6. Clean Surface: Thoroughly clean the mounting surface on the transom, removing any old gasket material or corrosion.
  7. Install New Gaskets: Place the new gaskets onto the new junction block body.
  8. Mount New Assembly: Position the new manifold assembly and secure it using the new mounting bolts and lockwashers. Tighten to manufacturer-specified torque.
  9. Reconnect Lines: Re-attach the hydraulic trim lines to the new junction block. Ensure the fittings are tight to prevent leaks.
  10. Bleed and Refill: Top off the power trim fluid reservoir and bleed the system of any air according to your drive's service manual.
  11. Test Operation: Reconnect the battery. Operate the trim system up and down several times, checking for smooth operation and any signs of leaks.

Troubleshooting & FAQ

Q: How do I confirm this manifold connector will fit my specific Mercruiser drive?

A: This kit is designed for Mercruiser R/MR, Alpha One Gen 2, and Bravo I/II/III models made from 1983 and onward. The best way to confirm fitment is to match your existing part's number to one of the cross-reference numbers listed (e.g., 8M0137703, 98825A4). Visual comparison with the product images is also recommended.

Q: What are the common symptoms of a failing manifold connector?

A: Signs of failure often include hydraulic fluid leaks around the transom-mounted connector, a spongy or unresponsive trim system, or the inability of the stern drive to hold its trim position. Visual inspection may reveal cracks or corrosion on the housing.

Q: Does this kit include everything needed for the job?

A: This kit includes all the core components for the replacement: the plate, block body, gaskets, bolts, and lockwashers. You will need to supply your own tools and fresh power trim/tilt fluid.

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:
  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: 38723430488

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NLB
Battle Creek, US
★★★★★ 5
Interesting
Format: Kindle
So I will say I enjoyed the story, for sure had its moments where it dragged but it was a great story. I really liked that omegas picked their alphas/make the pack. Normally the Alphas make it and the omega fits in with them which is great but I enjoyed this new version where all the power basically went to the omega. It was a nice change of pace. I can admit some of the weird bedroom stuff with her being pregnant was odd, it’s really not hard to do stuff when pregnant (I know I’ve had two and it’s normal and even encouraged at the end especially if you want the baby out). But I like the story as a whole and will read the second, I do hope the next one isn’t dragged bc it stopped being action or tense after she met her alphas and I don’t think it was brought up or properly done when they tried to do it. More sweet after she left.
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Reviewed in the United States on November 11, 2024
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Altairjones
Massapequa, US
★★★★★ 3
I’m a little disappointed.
Format: Kindle
I usually like Jillian West’s books but this one was missing a lot for me. The pregnancy didn’t come across as real. She’s on her feet for 12 hour days but is perfectly healthy at 8 months pregnant? Yet the week she moves in all of a sudden she’s not? She is planning on actually running during one of the plot buildups. But at 8 months pregnant that’s incredibly hard to do. The lack of breathing ability and lung space, the change in body center, mass, and gravity. All of it prohibits running, unless you’re an athlete this didn’t come off as at all realistic. I didn’t feel any connection with the alphas. There wasn’t any emotional connection. It could be because of the tense it was written in. But I didn’t get any deep feelings out of this. It came across as checking off boxes. Even the spicy scenes weren’t really believable for me. I wanted to see them fall for her, and it just kind of all fizzled. Even Bishop. One thing I did really like was the ending. I did not see it coming and I’m interested in reading book two because of it. But on the whole this book was mostly disappointing for me.
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Reviewed in the United States on March 16, 2024
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Melissa Williams
Lexington, US
★★★★★ 4
4.25 stars
Format: Kindle
Vale is an 8 month pregnant omega working as a waitress at a strip club and a cam girl. She starts to get very creepy vibes from a regular at the club, and her baby daddy ghosted her. She has had an online relationship with a man named Bishop through her cam girl status. One night, bishop was paying to watch her sleep and ansthe creepy regular Andrew break in and watch her sleep he tells vale to come to him at his business now. She flees and finds herself at a large security company with some.hot of alphas who are there to help her. This imegaverse is a little different than I have read, but I am thoroughly enjoying it. Vale is not a traditional omega she was raised by a single beta mom, and the alphas are not normal alphas they have never really loved pack life. But they are ruthless mercenaries. They need her, and she needs them. I love the aspect of the stalker and now the plot twists at the end, so so good. Sometimes, it seemed a little slow and stale mated, but since this a duet, I think It was just her starting to have Vale get to know her alpha suitors. Cliffhanger for sure with this one.
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Reviewed in the United States on September 9, 2024
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Austin & Cambria
Lake Worth, US
★★★★★ 5
That ending 😫
Format: Kindle
I fell into a false sense of security and really thought this was gearing towards a happy ending. Then I realized there’s no work they don’t punish Andrew. I really liked Vale’s character. I don’t normally read books with pregnancy but going into this knowing she was pregnant made it more enjoyable for me. I loved Bishops devotion to her and her happiness. I also loved that Holt and Mercy couldn’t fight their attraction to her. I love scent matches so very much. I’m so curious to see how this duet will end up. And I need to pay more attention and notice that a book I’m starting is a duet to begin with lol
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Reviewed in the United States on February 21, 2025
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Sarah A
New York, US
★★★★★ 5
oh wow
Format: Kindle
I just knew there was something about Cooper! I’m wondering if he’s about to be included but damn I’m glad he’s at least not a rapist and creepy guy, he just got called on assignment and had to go! This should be interesting! She’s gonna run and then what’s his face is gonna grab her. I’m worried! Wow that was a great book and cliffhanger! Loving this!
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Reviewed in the United States on December 27, 2025

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