Spark plugs for 175 Johno 1999

Trent

Captain
Joined
Nov 17, 2001
Messages
3,333
Re: Spark plugs for 175 Johno 1999

NGK... BPZ8HS-10 gap is .030<br />I dont show a cross to Champion.
 

Bear

Lieutenant Commander
Joined
Mar 1, 2001
Messages
1,627
Re: Spark plugs for 175 Johno 1999

This is Champion plugs I guess:<br />14 O437929 6 SP PLG QL78YC-8PK $6.29 <br />14 O502180 6 SP PLG QL77JC4 $5.94 <br />14 O502178 6 QL16V-PLUG $15.09 <br /><br />Manufacturer: Johnson <br />Engine Type: 1999 Outboard <br />Model: BJ175PLEES <br /><br />From here:<br /> www.boaterssupply.com
 

seahorse5

Rear Admiral
Joined
Jan 24, 2002
Messages
4,698
Re: Spark plugs for 175 Johno 1999

The factory recommended plug is the Champion QL78YC gapped at .030". It can be widely purchased for around $3.50 each. There is no other recommended plug for normal use. The QL77JC4 and the QL16V can be used but do not give as good an idle or low speed operation as the extended nose QL78YC does.
 
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