Refine Parts List
Engine / Model :

Engine / Model

Beginning S/N

Ending S/N

Sierra Thermostat Housing

185 (229 CID) 6330183 6919655 18-1994 (9)
185 (262 CID) A331455 B527954 18-1994 (9)
200 GM 6218462 B525981 18-1994 (9)
200/5.0L GM (3)B525982 UP 18-1994 (9)
200/5.0L GM (4)B525982 UP 18-1994 (9)
205 (262 CID) A331455 B527954 18-1994 (9)
205/4.3L, 4.3LX (262 CID) (3)B527955 D714369 18-1994 (9)
228 GM 4765100 6218461 18-1993
228 GM 6218462 B525981 18-1994 (9)
230 GM 6218462 B525981 18-1994 (9)
230/5.0L-LX GM (3)B525982 F600999 18-1994 (9)
230/5.0L-LX GM B525982 F600999 18-1994 (9)
250 GM 4768000 4908849 18-1993
255 GM 4175500 4767999 18-1993
260 GM 6218462 B525981 18-1994 (9)
260/5.7L GM (3)B525982 F600999 18-1994 (9)
350 Mag B525982 F600999 18-1994 (9)
5.7 GM (SKI) A338553 B514626 18-1994 (9)
280 GM TRS 4176250 4770199 18-1993
300 MR/TRS GM 6668677 B430367 18-1994 (9)
500(Gen V) F213293 F615766 18-1994 (9)

Engine / Model

Beginning S/N

Ending S/N

Sierra Thermostat Housing

Notes:
  • (3) : Old Design
  • (4) : New Design
  • (9) : For stainless steel version use 18-1989
Refine Parts List
Engine / Model :
Price: $100.37
Save: $14.62
(12% Off $114.99)
Part # 18-1910
2nd Day Air for $2 More Eligible
SHIPS TODAY!* if ordered in 34 mins.
Hurry! Only 1 left in stock
Price: $53.36
Save: $11.62
(17% Off $64.98)
Part # 18-1977-1
2nd Day Air for $2 More Eligible
SHIPS TODAY!* if ordered in 34 mins.
No Reviews
Price: $189.66
Save: $85.33
(31% Off $274.99)
Part # 18-1989
2nd Day Air for $2 More Eligible
SHIPS TODAY!* if ordered in 34 mins.
No Reviews
Price: $10.69
Save: $3.80
(26% Off $14.49)
Part # 18-1989K
2nd Day Air for $2 More Eligible
SHIPS TODAY!* if ordered in 34 mins.
No Reviews
Price: $226.70
Save: $38.29
(14% Off $264.99)
Part # 18-1993
2nd Day Air for $2 More Eligible
Price: $132.89
Save: $67.10
(33% Off $199.99)
Part # 18-1994
2nd Day Air for $2 More Eligible
SHIPS TODAY!* if ordered in 34 mins.
No Reviews
Price: $247.19
Save: $93.80
(27% Off $340.99)
Part # 18-3531
2nd Day Air for $2 More Eligible
No Reviews
Price: $167.55
(Out of stock)
Save: $76.45
(31% Off $244.00)
Part # 18-3532
2nd Day Air for $2 More Eligible
No Reviews
(Out Of Stock)
Price: $319.83
Part # 18-3530-1
2nd Day Air for $2 More Eligible
SHIPS TODAY!* if ordered in 34 mins.
No Reviews
Price: $103.49
(Out of stock)
Save: $115.70
(52% Off $219.19)
Part # T-20913
2nd Day Air for $2 More Eligible
No Reviews
(Out Of Stock)
Price: $8.21
Save: $3.29
(28% Off $11.50)
Part # 55143Q
SHIPS TODAY!* if ordered in 34 mins.
No Reviews
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 Star
Missing 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.
Was this review helpful?
Average Customer Review for Thermostat Housing - 18-1993 - Sierra
Full StarFull StarFull StarFull StarEmpty Star
Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarEmpty Star
Excellent Product, but had been sitting around for a while
by Matthew from Pawcatuck, Connecticut on August 14, 2016
Product and ship time was excellent, however the packaging and shipping were extremely neglectful. The item was without original package and had a considerable layer of dust and grime inside and out. While the grime was disappointing, the lack of original package hurt the most as it was shipped in a standard little box inside another box with nothing to stop this large hunk of metal from slamming around. Both brass plugs were a casualty of this shipping method as they were damaged on the threads beyond being usable. Also there were several scuffs and s es on the housing itself which required a full new paint job before installation to prevent rust (and a full clean to remove the grime inside and out). I was thrilled that they had this part in stock and was able to ship quickly but be prepared to do a lot of prep work before bolting this item into your engine.
Was this review helpful?
Q:
Will this fit my 2005 mercruiser 3.0 ?
A:
Yes, based on the information you have provided, this should work for your application.


Ask a question
Question & Answer Guidelines
This product ships in 1 to 3 business days.
Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies