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Old January 9th, 2007, 17:53
Dmanti Dmanti is offline
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Location: NorthEast Georgia
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0331 head [low emission]

Well... I think this is my first post... to the point

I am in the process of buying a 1999 XJ Limited, and I was wondering when they switched from the 0630 head to the low emission 0331 head. I've read that it was in later during the 99 model, or only in the 2000 model. I'm also wondering if I should really be that scared of having the low emission head... if so, can it be replaced?
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Old January 9th, 2007, 18:27
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Tim_MN Tim_MN is offline
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Join Date: Mar 2003
Location: Minneapolis, MN
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Re: 0331 head [low emission]

76,000 miles and no 0331 head problems.

The 0331 was only used with the distributor-less XJ's model years 2000 and 2001. Anything is possible with Jeeps but if you have a distibutor you don't have an 0331 head. Use the search function and enter 0331 head for more postings.

Here is a good 0331 thread -

Originally Posted by bimmerjeeper

Go ahead and slam the liftgate down on a blanket, and see how long you are laughing.
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Old January 9th, 2007, 18:32
gabletech gabletech is offline
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Location: Westchester. New york
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Re: 0331 head [low emission]

170,000 on my 2000 with no problems. last 52,000 with a lift And I beat on mine daily.
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Old January 9th, 2007, 18:42
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casm casm is offline
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Re: 0331 head [low emission]

116,000 here and no issues.
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Old January 9th, 2007, 18:48
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cklaus cklaus is offline
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Join Date: May 2006
Location: Blacksburg Va
Posts: 211
Re: 0331 head [low emission]

130,000 here and runs great with 265/75-16's... getting 20-22mpg on stock gearing too (highway)
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