Mercruiser Thermostat Housings

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Engine / Model

Beginning S/N

Ending S/N

Sierra Thermostat Housing

Mallory Thermostat Housing

185 (229 CID)6330183691965518-1994(9) 9-42502
185 (262 CID)A331455B52795418-1994(9) 9-42502
200 GM6218462B52598118-1994(9) 9-42502
200/5.0L GM(3)B525982UP18-1994(9) 9-42502
200/5.0L GM(4)B525982UP18-1994(9) 9-42502
205 (262 CID)A331455B52795418-1994(9) 9-42502
205/4.3L, 4.3LX (262 CID)(3)B527955D71436918-1994(9) 9-42502
228 GM4765100621846118-1993 -
228 GM6218462B52598118-1994(9) 9-42502
230 GM6218462B52598118-1994(9) 9-42502
230/5.0L-LX GM(3)B525982F60099918-1994(9) 9-42502
230/5.0L-LX GMB525982F60099918-1994(9) 9-42502
250 GM4768000490884918-1993 -
255 GM4175500476799918-1993 -
260 GM6218462B52598118-1994(9) 9-42502
260/5.7L GM(3)B525982F60099918-1994(9) 9-42502
350 MagB525982F60099918-1994(9) 9-42502
5.7 GM (SKI)A338553B51462618-1994(9) 9-42502
280 GM TRS4176250477019918-1993 -
300 MR/TRS GM6668677B43036718-1994(9) 9-42502
500(Gen V)F213293F61576618-1994(9) 9-42502

Engine / Model

Beginning S/N

Ending S/N

Sierra Thermostat Housing

Mallory Thermostat Housing

Notes:
(3) : Old Design
(4) : New Design
(9) : For stainless steel version use 18-1989
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Engine / Model

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Thermostat Housing for Mercruiser 78984A1, GLM 13530 - Sierra

Thermostat Housing for Mercruiser 78984A1, GLM 13530 - Sierra*
Sale Price: $221.39
Save: $42.61
(16% Off $264.00)
Part # 18-1993
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Part # 18-1993
Replaces OEM part #
  • MERCURY MARINE 78984A1
GLM 13230 replacement parts

Thermostat Housing - Sierra*
Sale Price: $136.79
Save: $47.21
(25% Off $184.00)
Part # 18-1994
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Part # 18-1994
Replaces OEM part #
  • MERCURY MARINE 87290A4
For: Stainless Steel Version use 18-1989
Mallory Thermostat Housing 9-42502

Mallory Thermostat Housing 9-42502
Sale Price: $151.99
Save: $25.00
(14% Off $176.99)
Part # 9-42502
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Replaces GLM #:N/A
Replaces Original Equipment Manufacturer(OEM):Mercruiser
Replaces Original Equipment Manufacturer # (OEM #):87290A4
Fits Application:MCM/MIE GM V6-V8 (305,350,454,502 & 504 cid) early design

Sierra

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