SKU: 38723430488

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

Sale price$66.50 Regular price$73.89
Save 10%

Pay in installments of $18.47 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 24 - Sep 29

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 9 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
E
Verified Purchase
Erin Amones
Carnegie, US
★★★★★ 5
Instant Glass Skin!
Scent: Collagen, Size: 4 Count (Pack of 1)
I’ve tried SO many sheet masks and this collagen one is genuinely one of the best. My skin looked insanely hydrated, smooth, and glowy after just one use. It fit my face really well, stayed soaked the entire time, and didn’t leave that sticky feeling afterward. The next morning my skin still felt soft and looked brighter. Perfect before events or whenever your skin needs a reset. Definitely repurchasing!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
A
Verified Purchase
Amy Marie Anderson
Lexington, US
★★★★★ 5
Absolutely amazing masks!!!
Scent: Collagen, Size: 4 Count (Pack of 1)
These masks are beyond amazing! I use one once a week and leave it on overnight after completing my p.m. skincare routine and wake up to smooth, plump, moisturized, and absolutely glowing!! I have extremely sensitive skin and eyes and these masks do not bother me at all. No burning in my eyes and no irritation of the skin. My deep wrinkles seem a lot less pronounced and some of my more fine lines almost disappear for 24 hours after using this mask. They are simple to use and adhere to the skin perfectly even after applying serums and moisturizers. Once the mask is completely absorbed and becomes clear it peels of the skin with ease. Based on the quality of these masks I am shocked by the low price, it is such a great value for your money. This Mask has become a staple in my skincare routine and I will continue to purchase these!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
T
Verified Purchase
Tara Rekatsinas
Carnegie, US
★★★★★ 5
instantly more hydrated + glowy skin
Scent: Collagen, Size: 4 Count (Pack of 1), Scent: Collagen, Size: 4 Count (Pack of 1)
I love this mask. It’s one of those products you can actually see a difference with right after using it. It really helps with: 1. Deep hydration – my skin feels plump and moisturized, not dry or tight 2. Smoother texture – it softens everything and makes my skin feel really smooth 3. Glow/brightness – gives that fresh, healthy glow without looking greasy How I use it: I apply it on clean skin (usually at night), leave it on as directed, and let it fully absorb before removing. I like using it when my skin feels dull or dry and want a quick reset. Overall, it’s super easy to use and makes my skin look more refreshed every time. Definitely a go-to for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
A
Verified Purchase
Ashley
Lexington, US
★★★★★ 4
Woke Up Glowing ✨ (But Sleeping In It Is a Stretch lol)
Scent: Collagen, Size: 4 Count (Pack of 1)
I was honestly impressed with this mask! It feels super soft, cooling, and refreshing while wearing it. The jelly texture makes it feel really hydrating and luxe, like a mini spa night at home. My skin looked smooth, plump, and GLOWING the entire next day after I took it off. Like… noticeably radiant. I also have sensitive skin, so I was a little nervous trying it at first, but I didn’t have any irritation or reaction at all. My skin felt calm, hydrated, and refreshed afterward. One thing I actually liked was that the mask was easy to customize a little. I have a nose piercing, so I just tore a small piece near my nose so it would fit comfortably without irritating it. The material held up perfectly, so that was a nice bonus for anyone with piercings or who just needs a better fit in certain areas. My only complaint is the “sleep in it” part of the instructions. I personally don’t see how that’s possible 😅 The mask stays pretty moist and jelly-like the whole time, so it felt uncomfortable to lay down in and I kept feeling like it would slide around. I ended up just wearing it for a while before bed instead. Overall though, the results were worth it and I’d definitely use it again for the glow alone!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026
A
Verified Purchase
Anna
Natrona Heights, US
★★★★★ 5
Nice mask! Caviar
Scent: PDRN, Size: 4 Count (Pack of 1), Scent: PDRN, Size: 4 Count (Pack of 1)
The first 3 pictures were taken after the first hour and a half. The second 3 pictures were taken at 2 hours. The mask had a hard time dissolving underneath my eyes and around my chin area mostly but everywhere else it hardened within the first hour or so. I will try to wear it for longer than 2 hours next time. To see if that changes, but my skin feels really nice right now. It's a little sticky, but it looks healthy and has a nice glow. Application is easy. I love that its separated into 2 parts. Doesn't fit well around the nose between the eyes and doesn't cover my entire face but its a great mask. I tried the caviar one this time. I have the collagen ones as well but these have better reviews. They seem to work effectively, for a nice glow and self pamper session.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026

recommand products