Mercruiser Water Temperature Senders

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Model:

Model

Serial #

Sierra Water Temperature Sender

ROVER 31400000F & UP 18-5897
110 1565944-1566081 18-5898
110 1602980 & UP 18-5898
120 2324346 & BELOW 18-5898
120 2324347 & UP 18-5897 (2)
140 (4 cyl/3.0) 2508061-3462607 18-5897 (2)
140 (4cyl/3.0) 4512156 & UP 18-5897 (2)
3.0L/3.0LX C856559 & UP 18-5897 (2)
140 (6 cyl) 1566119-1725960 18-5898
150 1666495-2048046 18-5898
160 2048022-2770031 18-5897 (4)
165 2770032 & UP 18-5897
175 (262 CID) B527955 & UP 18-5897
4.3L (Generation II) D714107 & UP 18-5897
185 (229 CID) 6330183 & UP 18-5897
185 (262 CID) A331455 & UP 18-5897 (2,5,6)
190 1504311-1730903 18-5898 (2)
200 2453769-271202 18-5897 (2)
200 6218462 & UP 18-5897 (2)
200/5.0 L B525982 & UP 18-5897
205 (262 CID) A331455 & UP 18-5897
205 (4.3L) B527955 & UP 18-5897
4.3LX (Generation II) D714370 & UP 18-5897 (2)
215 2781153 & UP 18-5897 (2,5,6)
225 (Ford) 3385721 & UP 18-5897 (2)
225 (GM) 1632308-2694014 18-5897 (2,5,6)
228 4765100-6218461 18-5898 (2)
228 6218462 & UP 18-5897
230 6218462 & UP 18-5897
230 (I.B.) 5907058 & UP 18-5897 (7,8)
230 (5.0) B522506 & UP 18-5897
233 Ford 4173000 & UP 18-5898 (2)
250 9314301-4908849 18-5897 (2)
255 3258728 & UP 18-5898
260 4908850-6218461 18-5898 (5,6)
260 6218462 & UP 18-5897
260/5.7L B522506 & UP 18-5897 (7,8)
260 5907058 & UP 18-5897
270 2851074-3077735 18-5897
280 4176250 & UP 18-5898 (2)
300 MR/TRS 6668677 & UP 18-5897 (5,6)
320 A543604 & UP 18-5897 (2)
325 2278747 & UP 18-5897
330 4623115 & UP 18-5898
330/W.B.W. 6083145 & UP 18-5897 (2)
340/7.4L 5889914 & UP 18-5897 (2)
350 3780450 & UP 18-5898 (7,8)
350 (Magnum) A635178- B525981 18-5897
350 (Magnum) B525982-0505449 18-5897 (2)
350 (Magnum) D505450 & UP 18-5897 (2)
370 (TRS) 4179554 & UP 18-5897
390 2781129-2825059 18-5897 (2)
400 4179554 & UP 18-5897 (2,5,6)
420 A398941 & UP 18-5897 (2)
425 A398941 & UP 18-5897 (2)
440 4179554 & UP 18-5897
454 (Magnum) A631894 & UP 18-5897
454 (Bravo) B721206-D805068 18-5897 (2)
460 4179554 18-5897 (2)
465 C849992 & UP 18-5897
500 C577254 & UP 18-5897 (2)
502 (Bravo) C878221 & UP 18-5897 (2,5,6)
502 (Bravo Gen V) D824589 & UP 18-5897
525 D456000 & UP 18-5897 (2)
575 A677429 & UP 18-5899
888 3108723 & UP 18-5897 (2)
898 4762210-6218461 18-5898
898 6218462 & UP 18-5897 (2)
5.7 A338553-B514626 18-5897 (2)
5.7 B514627-B525981 18-5897
5.7 (Bravo) B525982 & UP 18-5897
7.4 (Bravo) B771113-D803117 18-5897 (2)
7.4 (Bravo Gen V) D803118 & UP 18-5897 (2)
7.4L (Hurth) ALL 18-5897 (2,5,6)
454 D805069 & UP 18-5897 (5,6)
8.2 C878221-D857199 18-5897 (2,5,6)
8.2 D857200 & UP 18-5897 (2)

Model

Serial #

Sierra Water Temperature Sender

Notes:
  • (2) : Does not include Dual application
  • (4) : 2233574 & Below use 18-5898
  • (5) : (3/8 - 18)
  • (6) : (1/2 -14) Use 18-5898
  • (7) : Electric Choke
  • (8) : Auto Choke
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Model:
Your Price: $17.85
Save: $8.62
(32% Off $26.47)
Part # 18-5897 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 97257A1
  • OMC 980613
  • VOLVO 3853787
For Water Temperature
For: 5.0L, FL, FI, 5.8L FL, FI, FSI
Your Price: $13.46
Save: $8.76
(39% Off $22.22)
Part # 18-5898 ValueShip™ Eligible
Replaces OEM part #
  • CRUSADER 700427
  • MERCURY MARINE 97258A1
  • OMC 171960
For Water Temperature
Your Price: $27.99
Save: $6.56
(18% Off $34.55)
Part # 18-5899 ValueShip™ Eligible
Replaces OEM part #
  • CRUSADER 700425
  • PLEASURECRAFT RO20001
  • MERCURY MARINE 815425T
  • MERCURY MARINE 90806
  • MERCURY MARINE 90806A1
  • MERCURY MARINE 34623
  • MERCURY MARINE 815425
  • MERCURY MARINE 8M0068784
  • OMC 982650
  • VOLVO 3857532

Details:


Thread Size: 1/8" or 3.2mm-27 NPT

For Oil Pressure
For: 230, 250, 3.0L, GLM, GLP, GSM, GSP, 4.3L, GL, GXI, OSI, 5.0L GL, GXI, OSI, 5.7L GL, GI, GXI, GIL, GXIL, OSI, OSXI, 8.1L GI, GXI, OSI, GIL
Sierra
Full StarFull StarFull StarFull StarEmpty Star Based On 5 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarTemperature Sender
by Curt from Greenville, Wisconsin on July 09, 2015
Works great, easy to install.
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Full StarFull StarFull StarFull StarFull StarIt fit, but haven't checked function yet
by Eric from Alpharetta, Georgia on October 13, 2012
I have not actually tested to see if this temp sender works as expected, but it fit exactly as it was supposed to.
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Full StarFull StarFull StarFull StarFull StarTemperature Sender
by Gerald from Tinley Park, Illinois on August 09, 2012
Good
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Full StarFull StarFull StarFull StarFull Startemperature sender
by James from Cape Coral, Florida on June 20, 2012
It appears to be working good and I feel more relaxed when I go out,because I can see how hot my engine is running.
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Full StarEmpty StarEmpty StarEmpty StarEmpty StarTEMPERATURE SENDER
by BRIAN from SAN DIMAS, California on July 09, 2010
PRODUCT WAS JUNK DIDN'T WORK, PUT ANOTHER ONE IN, SIERRA IS AFTERMARKET PARTS, WHEN YOU BUY FROM THEM YOU TAKE A CHANCE.
(4 of 4 people found this review helpful)
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Full StarFull StarFull StarFull StarEmpty Star Based On 4 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarTemp sender
by joe from Alsip, Illinois on August 18, 2015
This sender was an exact duplicate for my 454 marine power engine and matched the factory gauge on my Carlcraft houseboat.
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Full StarFull StarFull StarFull StarFull StarWorked Great!
by Brian from Mount Laurel, New Jersey on August 03, 2015
Worked Great! Just what I needed.
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Full StarFull StarFull StarEmpty StarEmpty StarWater Temperature Sender 1/2" 14 NPT - Sierra
by Cliff from Layton, Utah on July 10, 2012
This sending unit for my 1978 OMC 800 reads high. It reads at 210 when its really 175. Is there a different sending unit for my boat? I just finished checking it this last weekend and was going to contact you. Please let me know which sending unit works with my boat. Thanks, Cliff 801 678 8240
(1 of 3 people found this review helpful)
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Full StarFull StarFull StarEmpty StarEmpty StarMeasure the thread before you buy
by Ted from Windsor Locks, Connecticut on August 09, 2011
I ordered base on the compatibility chart but it did not fit. :-(
(1 of 3 people found this review helpful)
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Average Customer Review for Sierra 18-5899 Oil Pressure Sender
Full StarEmpty StarEmpty StarEmpty StarEmpty Star Based On 1 Review | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty StarReview for Sierra 18-5899 Oil Pressure Sender
by a Customer on June 26, 2009
Ask UPS
(3 of 36 people found this review helpful)
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Q:
My sender has a 5/8 diameter on threaded side to manifold and 1/8 " Threaded side to where wire connects. Will this fit? Also, this is for a 350 small block Merc Cruiser?
A:
This is for a dual temperature station. It has 1/2"-14 NPT. 18-5896 is for a single station and has the 1/2" thread.
Q:
Will this sensor work on the 3.0?
A:
You need to know the thread size of the sender you have to determine which sender will work. This one has a 3/8" thread size.
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