Mercruiser Thermostat Housings

Your Price: $100.37
Save: $47.82
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Part # 18-1910 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 861493A3
Fits: 3.0L GM 181 L/4 (1999-Up)
Your Price: $39.73
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Part # 18-1977-1 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 47441A1
Fits: 225, GM 260, 228, 898/198, 185R, 898R, 228R, 2GR, 350 Mag
Your Price: $193.01
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Part # 18-1989 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 860256A4
  • MERCURY MARINE 861006A
  • MERCURY MARINE 87290A4
(Use 18-1989K Thermostat Service Kit for replacement parts)
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Service Kit for 18-1989 Thermostat Housing
Your Price: $226.70
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Replaces OEM part #
  • MERCURY MARINE 78984A1
Your Price: $132.89
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Part # 18-1994 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 87290A4
For: Stainless Steel Version use 18-1989
Your Price: $287.25
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Replaces OEM part #
  • MERCURY MARINE 861188A1
Fits: MCM/MIE GM V-6 & V-8 305, 350, 454 & 502 cid engines with closed cooling systems
Your Price: $167.55 (Out of stock)
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Part # 18-3532 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 55331A5
Fits: MCM/MIE GM V6 & V8, 305, 350, 454, and 502cid, engines with closed cooling
(Out Of Stock)
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Mallory Thermostat Housing 9-42505
Your Price: $91.99
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Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):90736A18
Fits Application:MCM/MIE 185 (229 cid) 330, 340, 7.4L, 454 Mag, 370, 425 & 465
Your Price: $349.93
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  • Replaces: 860256A4
  • For: GM V6 and V8 (305 & 350 ci)
Your Price: $103.49 (Out of stock)
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Chrysler 3" Elbow, Exhaust Outlet, 90° down angle.


Replaces OEM #:

  • Chrysler 2469639
  • Chrysler 2847405

*Used for inboard/outboard applications.


Engine Type:
Small Block V8 318-360 cu.in.


Engine Model:
All models 1966 and up with fixed exhaust.

(Out Of Stock)
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Mercruiser Riser, 3" exhaust outlet, 0° down angle


Replaces OEM #:

  • Mercruiser 76771
  • Mercruiser 60427

For use in most inboard applications.


Engine Type:
GM In-Line Six Cylinder 250 cu.in.GM In-Line Six Cylinder 250 and 292 cu.in.GM Small Block V8 305-350 cu.in.


Engine Model:
165 Equipped with Mercruiser riser #'s 76351, 76325, 60426, 49964, 76771 or 60427165 and 200198, 228 and 898

Sierra
Average Customer Review for Thermostat Housing Kit - 18-1910 - Sierra
Full StarFull StarEmpty StarEmpty StarEmpty Star Based On 1 Review | Write Review
Full StarFull StarEmpty StarEmpty StarEmpty StarMissing Pieces
by Karen from Palmetto, Florida on July 10, 2015
Thermostat and plastic sleeve for the thermostat were missing. Bolts that should be in the kit that mount the thermostat to the head were substituted for bolts that that don't fit anything on a Mercruiser 3.0...I know because I know every nut and bolt on this engine. They are so big they won't even fit through the holes of the thermostat housing, let alone anything else. Plus the bolts that were provided are cheap carbon steel. Ok for fresh water, completely useless for salt. Moral of the story: don't buy this stuff online unless it's genuine Mercruiser or Quicksilver. All of these boat part websites are selling the same junk. The sad thing is, I bought an exhaust elbow from iboats.com on this same order and it came with more parts than expected plus the bolts were stainless steel. Go figure.
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Average Customer Review for Mallory Thermostat Housing 9-42505
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarMercruiser Chevy big block 454 cid
by Thomas from Atlantic Highlands, New Jersey on July 07, 2015
Fits and works as expected. Mallory t-stat housing several hundred dollars less than Mercruiser part. Fully painted inside which should protect it from rusting. I boat in sal er, but only have a couple hours of use on it.
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Q:
Will this fit my 2005 mercruiser 3.0 ?
A:
Yes, based on the information you have provided, this should work for your application.
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