Mercruiser Thermostats

Refine Parts List Engine / Model Show all ROVER SCORPION SKI 3 4.3 5 5.7 7.4 8.2 60 80 90 110 120 140 150 160 165 170 175 180 185 190 200 205 215 225 228 230 233 250 255 260 262 270 280 300 320 325 330 340 350 370 390 400 420 440 454 460 470 485 488 500 502 575 888 898 Engine / Model Beginning S/N Ending S/N Sierra Thermostat Mallory Thermostat ROVER 3140000 UP 18-3551 9-43013 60 1887079 2049044 18-3551 9-43013 80 2049045 2851423 18-3551 9-43013 90 2851424 3226957 18-3557 9-43024 110 1537370 2044033 18-3551 9-43013 120(1) 1666601 3377340 18-3551 9-43013 120(2) 1725593 2324346 18-3551 9-43013 120/2.5L(2) 2324347 UP 18-3550 9-43020 140 (6 CYL) 1538930 1725960 18-3551 9-43013 140 (4 CYL)/3.0L 2508261 UP 18-3550 9-43020 3.0L/3.0LX C856559 UP 18-3550 9-43020 150 1666495 2048046 18-3551 9-43013 160(1) 2048022 2770031 18-3551 9-43013 160(2) 2048022 2233574 18-3557 9-43024 160(2) 2326069 2770031 18-3557 9-43024 165 2770032 5813433 18-3550 9-43020 165/3.7L (4 CYL) 6916779 UP 18-3555 9-43001 170 (4 CYL) 6916779 UP 18-3555 9-43001 175/4.3L, 4.3LX (262 CID)(3) B527955 UP 18-3551 9-43013 175/4.3L, 4.3 LX (262 CID)(4) B527955 UP 18-3551 9-43013 175/4.3L, 4.3 LX (262 CID)(4) F001220 UP 18-3649(7) 9-43002 180/3.7L-LX (4 CYL) 6916779 UP 18-3555 9-43001 185 (229 CID) 6330183 6919655 18-3551 9-43013 185 (262 CID) A331455 B527954 18-3551 9-43013 190 1564539 1730903 18-3551 9-43013 190 (4 CYL) 6916779 UP 18-3555 9-43001 200 2453769 2712072 18-3557 9-43024 200 GM 6218462 B525981 18-3551 9-43013 200/5.0L 0B525982 0F600999 18-3649 9-43002 200/5.0L GM(3) B525982 UP 18-3551 9-43013 200/5.0L GM(4) B525982 UP 18-3649(7) 9-43002 205 (262 CID) A331455 B527954 18-3551 9-43013 205/4.3L, 4.3LX (262 CID)(3) B527955 D714369 18-3551 9-43013 205/4.3L, 4.3 LX (262 CID)(4) B527955 D714369 18-3551 9-43013 205/4.3L, 4.3 LX (262 CID)(4) F001220 UP 18-3649(7) 9-43002 215 FORD 2781153 3040410 18-3551 9-43013 215 FORD 3040411 UP 18-3551 9-43013 215 FORD MCM/MIE 3040411 3385720 18-3649 9-43002 225 FORD MCM/MIE 3385721 4176999 18-3649 9-43002 225 GM 1539620 2278646 18-3551 9-43013 225 GM 2278647 2399197 18-3551 9-43013 225 GM 2399198 2694014 18-3551 9-43013 225/225S FORD 3385721 UP 18-3551 9-43013 228 GM MCM/MIE 4765100 6218461 18-3649 9-43002 228 GM 4765100 6218461 18-3551 9-43013 228 GM 6218462 B525981 18-3551 9-43013 230 GM 6218462 B525981 18-3551 9-43013 230 MIE 5907058 0B5225505 18-3649 9-43002 230 GM IB(5) 5907058 B522505 18-3551 9-43013 230 GM IB(6) 5907058 B522505 18-3551 9-43013 230/5.0L GM IB(5) B522506 B525981 18-3551 9-43013 230/5.0L GM IB(5) B522506 B525981 18-3649(7) 9-43002 230/5.0L GM IB(6) B522506 B525981 18-3551 9-43013 230/5.0L-LX GM(3) B525982 F600999 18-3551 9-43013 230/5.0L-LX GM(4) B525982 UP 18-3551 9-43013 230/5.0L GM IB(4) B522506 B525981 18-3649(7) 9-43002 230/5.0L-LX GM B525982 F600999 18-3649(7) 9-43002 230/5.0L MIE 0B522506 0B788151 18-3649 9-43002 230/5.0LX GM 0B525982 0F600999 18-3649 9-43002 233 FORD 4173000 UP 18-3551 9-43013 233 FORD MIE 4173000 4902304 18-3649 9-43002 250 GM 2314301 2639854 18-3551 9-43013 250 GM 4768000 4908849 18-3551 9-43013 250 GM 4768000 4908849 18-3649 9-43002 250 GM MCM/MIE 2314301 2639854 18-3649 9-43002 250 GM MCM/MIE 4175500 5907057 18-3649 9-43002 255 FORD 3258728 UP 18-3551 9-43013 255 FORD MCM/MIE 3258728 4178299 18-3649 9-43002 255 GM 4175500 4767999 18-3551 9-43013 260 GM 4908850 6218461 18-3551 9-43013 260 GM 6218462 B525981 18-3551 9-43013 260 GM 4908850 6218461 18-3649 9-43002 260 GM IB(5) 5907058 B522505 18-3551 9-43013 260 GM IB(6) 5907058 B522505 18-3551 9-43013 260 MIE 5907058 0B522505 18-3649 9-43002 260/5.7L GM IB(5) B522506 B525981 18-3551 9-43013 260/5.7L GM IB(5) B522506 B525981 18-3551 9-43013 260/5.7L GM IB(5) B522506 B525981 18-3649(7) 9-43002 260/5.7L GM IB(6) B522506 B525981 18-3551 9-43013 260/5.7L GM(3) B525982 F600999 18-3551 9-43013 260/5.7L GM(4) B525982 F600999 18-3551 9-43013 260/5.7L GM(4) B525982 F600999 18-3649(7) 9-43002 260/5.7L GM 0B525982 0F600999 18-3649 9-43002 260/5.7L MIE 0B522506 0F024999 18-3649 9-43002 262 MAG ALPHA 0F803800 0K999999 18-3649 9-43002 262 MAG BRAVO 0F803800 0K999999 18-3649 9-43002 350 Mag B525982 F600999 18-3551 9-43013 4.3L/LX GM 0F000878 0F601126 18-3649 9-43002 4.3L/LX/LXH ALPHA 0F601127 0K999999 18-3649 9-43002 4.3L/LX/LXH BRAVO 0F601127 0K999999 18-3649 9-43002 4.3L/LH/EFI ALPHA 0L010044 UP 18-3649 9-43002 4.3L/LH/EFI 0L010044 UP 18-3649 9-43002 5.0L/EFI ALPHA 0L012052 UP 18-3649 9-43002 5.0L/EFI BRAVO 0L012052 UP 18-3649 9-43002 5.7 GM ALPHA 0F225560 0K999999 18-3649 9-43002 5.7 GM BRAVO 0F225560 0K999999 18-3649 9-43002 5.7L/EFI GM ALPHA 0L010037 UP 18-3649 9-43002 5.7L/EFI GM BRAVO 0L010037 UP 18-3649 9-43002 5.7 GM (SKI) A338553 B514626 18-3551 9-43013 5.7L SKI 0B514627 UP 18-3649 9-43002 5.7 GM SKI/BRAVO(3) B514627 UP 18-3551 9-43013 5.7 GM SKI/BRAVO(4) B514627 UP 18-3551 9-43013 5.7 GM SKI/BRAVO(4) B514627 UP 18-3649(7) 9-43002 5.7L MIE 0F025000 0F622099 18-3649 9-43002 5.7L MIE 0F622100 0K999999 18-3649 9-43002 5.7L MIE 0F622100 0K999999 18-3649 9-43002 5.7L MIE 0L002003 UP 18-3649 9-43002 270 GM 2851074 3077735 18-3551 9-43013 270 GM MCM/MIE 2851074 3385720 18-3649 9-43002 280 GM 4176250 4770199 18-3649 9-43002 280 GM TRS 4176250 4770199 18-3551 9-43013 300 MR/TRS GM 6668677 B430367 18-3551 9-43013 320 GM EFI A543604 UP 18-3551 9-43013 320 GM 0A543604 0C622418 18-3649 9-43002 325 GM MCM/MIE 2278747 3780449 18-3649 9-43002 325 GM 2278747 2313964 18-3551 9-43013 325 GM 2313965 3042730 18-3551 9-43013 325 GM 3042731 UP 18-3551 9-43013 330 GM 4623115 UP 18-3551 9-43013 330 GM MCM/MIE 4623115 0B816540 18-3649 9-43002 330 GM W/BW(5) 6083145 UP 18-3551 9-43013 330 GM W/BW(6) 6083145 UP 18-3551 9-43013 340/7.4L GM IB(5) 5889914 UP 18-3551 9-43013 340/7.4L GM IB(5) 5889914 UP 18-3551 9-43013 340/7.4L GM IB(6) 5889914 UP 18-3551 9-43013 340/7.4L MIE 5889914 0D715493 18-3649 9-43002 350 MAG 0B252882 0K999999 18-3649 9-43002 350 MAG 0B252882 0K999999 18-3649 9-43002 350 MAG SKI 0D505450 0K999999 18-3649 9-43002 350 MAG EFI SKI 0F215561 0K999999 18-3649 9-43002 350 MAG MPI/MIE 0L010019 UP 18-3649 9-43002 350 MAG MPI SKI 0F350583 UP 18-3649 9-43002 SCORPION SKI 0F800000 UP 18-3649 9-43002 7.4 BRAVO GM(3) B771113 D603117 18-3551 9-43013 7.4 BRAVO GM(4) B771113 UP 18-3551 9-43013 7.4 BRAVO GM(4) D603118 UP 18-3649(7) 9-43002 7.4L W/HURTH IB(5) C391564 D715493 18-3551 9-43013 7.4L W/HURTH IB(6) C391564 UP 18-3551 9-43013 7.4L W/HURTH IB D715494 UP 18-3649(7) 9-43002 7.4L/LX GM 0F352000 0K999999 18-3649 9-43002 7.4L MPI/TBI 0F563052 UP 18-3649 9-43002 7.4L MIE 0C391564 0D715493 18-3649 9-43002 7.4L MIE 0C391564 0F349999 18-3649 9-43002 7.4L MIE 0D715494 0F820141 18-3649 9-43002 7.4L MIE 0F820142 0K999999 18-3649 9-43002 7.4L MIE 0F820142 0K999999 18-3649 9-43002 350 GM 3780450 UP 18-3551 9-43013 350 GM (MAGNUM) A635178 B525981 18-3551 9-43013 350 GM (MAGNUM)(3) B525982 UP 18-3551 9-43013 350 GM (MAGNUM)(4) B525982 UP 18-3551 9-43013 350 GM (MAGNUM)(4) B525982 UP 18-3649(7) 9-43002 350 MIE 3780450 4623109 18-3649 9-43002 370 GM 4179554 6721527 18-3649 9-43002 370 TRS GM 4179554 6721527 18-3551 9-43013 370 TRS GM 6721528 UP 18-3551 9-43013 390 GM 2781129 2825059 18-3551 9-43013 390 GM MCM/MIE 2781129 3042731 18-3649 9-43002 400 GM 4179554 0B457644 18-3649 9-43002 400 TRS GM 4179554 UP 18-3551 9-43013 420 GM A398941 UP 18-3551 9-43013 420 GM 0A398941 0B622418 18-3649 9-43002 440 TRS GM 4179554 UP 18-3551 9-43013 454 GM MAGNUM/ALPHA(3) A631894 B785148 18-3551 9-43013 454 GM MAGNUM/BRAVO(4) A631894 UP 18-3551 9-43013 454 GM MAGNUM/BRAVO(4) B721206 UP 18-3649(7) 9-43002 454 MAG MCM/SKI 0F305000 0K999999 18-3649 9-43002 460 TRS GM 4179554 UP 18-3551 9-43013 470 4208730 6218036 18-3552 9-43000 470 6218037 UP 18-3555 9-43000 485 5685394 UP 18-3552 9-43000 488 6170297 UP 18-3555 9-43000 500(Gen V) F213293 F615766 18-3551 9-43013 502 EFI/MPI MCM 0F8026000 0K999999 18-3649 9-43002 502 MAG MPI 0L017000 UP 18-3649 9-43002 575 GM 0A677429 0D763716 18-3649 9-43002 575 A677429 UP 18-3551 9-43013 8.2L MIE 0D857200 0F350274 18-3649 9-43002 8.2L MIE 0F350275 0F819619 18-3649 9-43002 8.2L MIE 0D857200 0F819619 18-3649 9-43002 8.2L MPI/MIE 0F819620 UP 18-3649 9-43002 888 FORD 3108723 UP 18-3551 9-43013 888 FORD MCM 3108723 4887829 18-3649 9-43002 898/198 GM 4762210 6218461 18-3551 9-43013 898/198 GM MCM/MIE 4762210 6218461 18-3649 9-43002 898 GM 6218462 UP 18-3551 9-43013 Engine / Model Beginning S/N Ending S/N Sierra Thermostat Mallory Thermostat Notes: (1) : Aluminum Manifold (2) : Cast Iron (3) : Old Design (4) : New Design (5) : Std. Cooling (6) : Closed Cooling (7) : 160° Refine Parts List Engine / Model Show all ROVER SCORPION SKI 3 4.3 5 5.7 7.4 8.2 60 80 90 110 120 140 150 160 165 170 175 180 185 190 200 205 215 225 228 230 233 250 255 260 262 270 280 300 320 325 330 340 350 370 390 400 420 440 454 460 470 485 488 500 502 575 888 898

Save 12%-30% Off.*

	Thermostat 140 Degrees - Sierra* Sale Price: $15.29 Save: $2.20 (12% Off $17.49) Part # 18-3550 No Reviews | Write Review Part # 18-3550 Replaces OEM part # MERCURY MARINE 59078
	Thermostat 142 Degrees - Sierra* Sale Price: $8.99 Save: $3.00 (25% Off $11.99) Part # 18-3551 No Reviews | Write Review Part # 18-3551 Replaces OEM part # CHRYSLER INBOARD 4142885 CRUSADER 96319 PLEASURECRAFT RO26002E MERCURY MARINE 59137 For: Ford 302/351 CID engines, and Crusader models:CH190 (305 CID), CH220 (305 CID), CH270 (350 CID), CH350 (454 CID)
	Thermostat 160 Degrees - Sierra* Sale Price: $11.69 Save: $3.00 (20% Off $14.69) Part # 18-3552 No Reviews | Write Review Part # 18-3552 Replaces OEM part # CRUSADER 96358 MERCURY MARINE 76270T MERCURY MARINE 76270 Fresh Water Cooling Only For: Crusader Models: 165 (229 CID), CH190/CH220 (305 CID), CH270 (350 CID), CH350 (454 CID)
	Thermostat 160 Degrees - Sierra* Sale Price: $14.39 Save: $4.10 (22% Off $18.49) Part # 18-3555 No Reviews | Write Review Part # 18-3555 Replaces OEM part # MERCURY MARINE 99155A1
	Thermostat - Sierra* Sale Price: $21.59 Save: $7.40 (25% Off $28.99) Part # 18-3557 No Reviews | Write Review Part # 18-3557 1" - 143 Degree Replaces OEM part # CHRYSLER FORCE F335068 OMC 382385 OMC 396987 MERCURY MARINE 47594
	Thermostat 160 Degrees - Sierra* Sale Price: $15.29 Save: $6.70 (30% Off $21.99) Part # 18-3649 1 Customer Review | Write Review Part # 18-3649 Fresh Water Cooling Use with 18-2917 Gasket Replaces OEM part # CRUSADER 97895 MERCURY MARINE 807252-2
	Mallory Thermostat (143) 9-43024 Sale Price: $23.99 Save: $3.00 (11% Off $26.99) Part # 9-43024 Hurry! Only 1 left in stock No Reviews | Write Review Replaces Original Equipment Manufacturer(OEM):CHRYSLER FORCE Replaces Original Equipment Manufacturer # (OEM #):F335068
	Mallory Thermostat 9-43013 Sale Price: $10.99 Save: $1.50 (12% Off $12.49) Part # 9-43013 1 Customer Review | Write Review Replaces Original Equipment Manufacturer(OEM):Mercruiser / Chrysler/Crusader/Pleasurecraft Replaces Original Equipment Manufacturer # (OEM #):807252T1 / 59137
	Mallory Thermostat 9-43002 Sale Price: $16.99 Save: $2.00 (10% Off $18.99) Part # 9-43002 No Reviews | Write Review Replaces GLM #:13100 Replaces Original Equipment Manufacturer(OEM):Mercruiser / Crusader Replaces Original Equipment Manufacturer # (OEM #):807252T2 Fits Application:160 degree
	Mallory Thermostat 9-43001 Sale Price: $14.99 Save: $2.40 (13% Off $17.39) Part # 9-43001 No Reviews | Write Review Replaces GLM #:13040 Replaces Original Equipment Manufacturer(OEM):Mercruiser Replaces Original Equipment Manufacturer # (OEM #):99155A1 Fits Application:160 degree
	Mallory Thermostat 9-43000 Sale Price: $11.99 Save: $2.00 (14% Off $13.99) Part # 9-43000 No Reviews | Write Review Replaces GLM #:13050 Replaces Original Equipment Manufacturer(OEM):Mercruiser / Crusader Replaces Original Equipment Manufacturer # (OEM #):76270T / 96358 Fits Application:160 degree
	Mallory Thermostat (140) 9-43020 Sale Price: $15.99 Save: $3.00 (15% Off $18.99) Part # 9-43020 2 Customer Reviews | Write Review Replaces Original Equipment Manufacturer(OEM):MERCRUISER Replaces Original Equipment Manufacturer # (OEM #):27-47590 1+59078

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Customer Reviews Shipping No Review for Thermostat 140 Degrees - Sierra Be the first to Write a Review No Review for Thermostat 142 Degrees - Sierra Be the first to Write a Review No Review for Thermostat 160 Degrees - Sierra Be the first to Write a Review No Review for Thermostat 160 Degrees - Sierra Be the first to Write a Review No Review for Thermostat - Sierra Be the first to Write a Review Average Customer Review for Thermostat 160 Degrees - Sierra Based On 1 Review Showing 1 of 1 Total Reviews | Write Review Review for Sierra 18-3649 Thermostat 160 Degrees by a CustomerMarch 20, 2009 (0 of 1 people found this review helpful) Was this review helpful? Report as inappropriate No Review for Mallory Thermostat (143) 9-43024 Be the first to Write a Review Average Customer Review for Mallory Thermostat 9-43013 Based On 1 Review Showing 1 of 1 Total Reviews | Write Review Running Cool! by William - Brick, New JerseyAugust 11, 2011 Two weeks after buying a used 94 SeaRay it started overheating. After flushing out the cooling system and replacing the thermostat it was still running a little to warm. After installing this one my temp is now right on and steady. Great Product! (1 of 1 people found this review helpful) Was this review helpful? Report as inappropriate No Review for Mallory Thermostat 9-43002 Be the first to Write a Review No Review for Mallory Thermostat 9-43001 Be the first to Write a Review No Review for Mallory Thermostat 9-43000 Be the first to Write a Review Average Customer Review for Mallory Thermostat (140) 9-43020 Based On 2 Reviews Showing 1 of 2 Total Reviews | Write Review ITEM SHOWN NOT THE ITEM RECIEVED by Ron - EL Cajon, CaliforniaOctober 15, 2010 Thermo kit shows gasket.Package came as thermostat only.Called i-boat.Was told it would be a long hold and they would call back.No call back came.Now its Friday night and have no chance for callback before Monday.Project put on hold.Now its one more missed weekend of boating.Still not sure why its called a thermostat kit when no gasket is included as shown (2 of 2 people found this review helpful) Was this review helpful? Report as inappropriate This product ships in 1 to 3 business days. To determine the shipping cost and estimated delivery date for this item click Add to Cart, then click Calculate Shipping inside your shopping cart. Standard Shipping Policies

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