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Description
MerCruiser 42673-C1 140hp 3.0L Water Exhaust Manifold MerCarb Top Mount ShiftingItem Details First This is only applicable to 1984ish 1998ish 3. 0L 2. 5L 4cyl engines that had the shifting components located on top of the valve cover and not mounted to the side of this manifold Probably easiest to just check and see what number is stamped on the side of yours Great Shape. Not cracked, not welded or patched. Freshwater used part. The Stamped Part Number is 42673C1. (This is slightly different than 42673 without the C1 at the end)
Item Details
- First... This is only applicable to 1984ish-1998ish 3.0L / 2.5L 4cyl engines that had the shifting components located on top of the valve cover and not mounted to the side of this manifold...
- Probably easiest to just check and see what number is stamped on the side of yours...
- Great Shape.
- Not cracked, not welded or patched.
- Freshwater used part.
- The Stamped Part Number is 42673C1. (This is slightly different than 42673 without the C1 at the end) - is referenced as 99798A18 in parts diagrams
- Major notes about these manifolds
- For MerCarb Carburetors (identified by single adjustment screw & 3.69" x 2.00" mounting stud pattern & single idle adjustment screw at the base)
- This style of manifold DOES NOT HAVE the mounting bosses for shift component hardware found on earlier style 4cyl engines that Shift bracket mounting to the side manifold vs. built into the rocker cover (1990 & up)
- In short this manifold is for replacing Early 1990's MerCruiser 4cyl Engines with shift bracket mounted to the valve cover...
- 860235A04 is for engines that needed the side mounted shift bracket (not equivalent to this one)
- This manifold was used on basically all 3.0L 140hp 4-Cylinder engines WITH Mercarb carburetors
- Since this does have the mounting bosses (threaded holes for the shift linkage) this is universally compatible with all of the 120hp / 140hp models using MerCarb carburetors.
- If you need any help tracking down the proper mounting gaskets for this, please feel free to contact me as I should be able to point you in the right direction.
- If you have any questions or doubts on compatibility, please contact me as I wouldn't want to send you the wrong thing
- Purchase with confidence!
Relevant part numbers
- 42673 / 860235A03 - If these didn't have the "C1" stamped at the end they had the mounting bosses.
- 42673C1 / 99798A18 - generally didn't have the mounting bosses
- 99798
- 806867A2
- 860235A03
- 99798A9 (Conventional Ignition) / 99798A16 (Digital Ignition)
1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000
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4.1 ★★★★★
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Product Reviews
★★★★★ 5
Cute under armor socks
Size: Medium, Color: Black/Assorted
There's no show under armour socks.Are perfect for anybody who likes thinner socks. I loved them, I love the design the colors and the comfort and fit. Hylie recommend to those of you who like thinner socks.
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Reviewed in the United States on October 22, 2024
★★★★★ 4
Well made and perform well, a little constricting
Size: Medium, Color: Black Assortment (6-pairs)
These socks definitely keep most of the moisture away from my feet, even in wet conditions, which is why I bought them. I am diabetic, though, and the recommendation is to wear socks that don't constrict at any point. These have a tight band around the opening that while it is not uncomfortable on, leaves a mark when I take them off. So far it's been ok, but if you have any kind of swelling in your feet or ankles these would probably not be the best. My foot measures size 8 and I wear size 9 Brooks running shoes. The socks fit me just right but based on the size of the opening and the overall length, I wouldn't think they would fit anyone more than a size larger. Overall well made and perform well as you would expect from this brand.
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Reviewed in the United States on July 20, 2018
★★★★★ 5
long lasting!
Size: Medium, Color: Black/Assorted
literally my favorite sock i will buy forever. they just started busting through after 6 years and i wear them a lot
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Reviewed in the United States on November 13, 2025
★★★★★ 5
Good quality
Size: Medium, Color: Black/Assorted
Comfy and sturdy
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Reviewed in the United States on January 27, 2025
★★★★★ 5
Favorite socks
Size: Medium, Color: Black/Assorted
These are my go to socks! Love these. Great towards sweat and different weather temperatures. Mostly use for working out and love them. Will be getting more!
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Reviewed in the United States on April 9, 2024