Indmar Thermostat Part #

[mjr119]

Anyone know the Napa part number for a 160 degree tstat that will fit my indmar 5.7L FI engine?

Also, which spark plug should I use? Id like to replace them. Thanks!

[mjr119]

Looks like I will be buying the AC DELCO MR43LTS plugs.

Indmar thermostat part number is 985009

[Gabbyg88]

I changed my thermostat(2 bolt) and confirmed 25 - 32 ft lbs of torque on the bolts.

Sent from my SCH-I545 using Tapatalk

[mjr119]

The subsitute part number for the S985009 is Sierra part number 18-3649. The cost is $41 vs $19, respectively.

Is there any reason not to use the Sierra thermostat? Even if it doesnt last as long, I could do 2 sierras for the price of an OEM. Not counting gaskets etc.

Do I have a 2 bolt or 3 bolt cover on my 03 lsv?

[mjr119]

http://www.marinepartssource.com/newdetails.asp?pnumber=IND985009&mfg=INDMAR&mcat1=17&mcat2=0&mcat3=0&mfgcategory=Thermostats+%26+Gaskets&mfgno=S985009