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Commercial Member
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285 Posts
Discussion Starter #1 (Edited)
Hi my fellow Wrangler Brothers,

My son and I are what I call 'Extreme Enthusiasts'. Our hobby and passion is Jeeps, particularly the 4.0L engines and Cherokees. We do Cherokees because they are cheaper than Wranglers but many of the parts are the same or similar.
We are not a shop or business, just a father and son team working together on our own vehicles in our garage at home.

Our Jeep Stable includes--
2- '85 factory Cherokees with the 2.1L turbodiesel, one is SN -000005
2- lifted Cherokees, one with Sprintex SC, other BT M90 supercharger
1- lowered 'RaceJeep' Cherokee with red M62 supercharger thru the hood
1- stock 'Daily' Cherokee getting many 'hand-me-down' mods
1- XJ Buggy- 1 tons, 42" Pitbulls, Bilstein air struts, chopped and caged
1- 'Beater' off-road XJ- was free and added used 35s cut fenders and diffs
1- Ranger with XJ 4.0 engine AW4 and 232, SD axles linked coilovers 42s
2- Cherokees being fixed and cleaned to flip and sell
4- 5 speed parts XJs, rusted out but with all parts for 5 speed conversions
1- MJ shell for future project lowered dually
4- parts XJs

We spend a great deal of money on our Jeep hobby and have bought many parts and accessories. Some work, others fail. When we find something that works, we buy multiples to get a better price and save on shipping. Most of the time we use all the parts that I buy on our personal Jeeps but sometimes I have unused 'leftovers'. When they're gone, they're gone.

We research everything and try and share and include as much information as possible for others to learn and enjoy.

Marty and Ben

Bosch 12 Hole Injectors (Set of 6)

Jeep Cherokee XJ 4.0L, Wrangler YJ/TJ 4.0L, Grand Cherokee ZJ/WJ 4.0L
Genuine Bosch orange color -161 injectors.
Flow Matched to better than OEM standards
Remanufactured using stringent proprietary processes here in USA
Backed with industry leading Unlimited miles LIFETIME warranty
New 'O' rings and pintle caps included
240cc/min 22.9lb/hr at 43.5psi(3bar), 24.4lb/hr at 49psi, +/-3%

Great stock replacement
May be used on stroker engines

Not 1 hole, not 4 hole, but 12 hole injectors
Better atomization of the fuel
Smoother idle, better fuel mileage
Improved throttle response and performance

'99+ EV6 style $115 shipped

'98-down EV1 style $125 shipped

(EV6 to EV1 1 piece adapters included, no wire/harness cutting required)

Note- Lubricate O rings/seals prior to installation to prevent damage and create a tight seal, lubricating grease included with set of injectors.

Typical 12 Hole Injector


Will work with '98-down EV1 and '99+ EV6. No harness cutting.

62mm BORED THROTTLE BODY
Will include a bored 62mm Throttle Body for an additional $100.
'99+ EV6 style + 62mm bored Throttle Body $215 shipped

'98-down EV1 style + 62mm bored Throttle Body $225 shipped

(EV6 to EV1 1 piece adapters included, no wire/harness cutting required)


12 hole injectors (UC) have 50 micron droplet size. Way better atomization.
4 hole injectors (Clll) have 90 micron droplet size.
These work great!!​
Installed in son's 'daily XJ' '98 170k, now idles smoother, better mileage, better throttle response.
Better mileage and power. Smoother idling, easier starting.
Surprisingly they work much better than the 4 hole 703 or 784 injectors that we have tried.

BOSCH 12 HOLE INJECTORS
'99+ EV6 style-- $115 shipped
'98-down EV1 style-- $125 shipped

(EV6 to EV1 1 piece adapters included, no wire/harness cutting required)

ADD a 62mm BORED THROTTLE BODY +$100
Will include a bored 62mm Throttle Body for an additional $100.
'99+ EV6 style + 62mm bored Throttle Body-- $215 shipped
'98-down EV1 style + 62mm bored Throttle Body-- $225 shipped

(EV6 to EV1 1 piece adapters included, no wire/harness cutting required)

ADD 6 NEW NGK FR5-1 SPARK PLUGS +$10
These are the BEST spark plugs that I have found and use exclusively.
'99+ EV6 style + 62mm bored Throttle Body + 6 NEW NGK FR5-1 Spark Plugs-- $225 shipped
'98-down EV1 style + 62mm bored Throttle Body + 6 NEW NGK FR5-1 Spark Plugs-- $235 shipped

(EV6 to EV1 1 piece adapters included, no wire/harness cutting required)

PM if interested.
PayPal accepted.
 

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Commercial Member
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285 Posts
Discussion Starter #2
We use these 12 hole injectors on our personal Jeeps.
We had the 4 hole injectors 703 and 784s in our Jeeps and swore by them. We changed them out to these newer 12 hole injectors and now swear by these.

We immediately noticed easier starting, smoother idle, quicker throttle response, seams more powerful.
My son noticed about a 2mpg gain every day city driving and he doesn't drive with any concern or attempt for mileage.

If you have a set of 4 hole 703 or 784 injectors, IDK if it is worth it to switch them out.
If you have the original 1 hole injectors, it is Most definitely worth it changing to these 12 hole injectors.
Your results may vary but many have noticed the improvements.
Just my 2 cents.
 

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Commercial Member
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285 Posts
Discussion Starter #3
All PMs answered.
 

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Commercial Member
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285 Posts
Discussion Starter #4
I still have a set.
 

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Commercial Member
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285 Posts
Discussion Starter #6
Nah, you're on your own for the pentastar motor.
 

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747 Posts
Got any 91-95 Wrangler 62mm throttle bodies?
 

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86 Posts
How about injectors for the 3.8 JK's?
 
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