12-29-2023, 03:20 PM
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#1
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Join Date: Sep 2013
Location: Texas
Posts: 53
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Member
Join Date: Sep 2013
Location: Texas
Posts: 53
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Recommended Ignition Coils for 03 V8?
I was searching for a recommendation on replacement ignition coils but didn't see anything in the forum already. Did I search fail?
For the ignition coils, if I can save money over OEM and not sacrifice anything I'd love to do so.
I'm not looking for "cheap crap" that I can just get by on. I would like something reliable that will offer similar performance to stock for less if that exists.
OEM looks like about $150 per coil (1200!?)
I saw someone somewhere mentioned Densco. They are about $55 each:
Amazon.com
I also found these for $200 ... I'm guessing they are garbage though?
Toyota Lexus 8 Piece Performance Ignition Coil Set TRQ Performance ICA65565
Other suggestions?
While I am asking, if you have spark plug recommendations, I'm open to them as well.
For spark plugs ... are these motors picky like my last vehicle was?
Your help is appreciated!
Last edited by locked up; 12-29-2023 at 03:30 PM.
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12-29-2023, 04:10 PM
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#2
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Senior Member
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Join Date: Dec 2018
Location: New Hampshire
Posts: 1,208
Real Name: Mike
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Senior Member
Join Date: Dec 2018
Location: New Hampshire
Posts: 1,208
Real Name: Mike
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Electronics are best being OEM or whoever makes the OEM parts, pretty sure Denso is a common supplier and safe if bought from a reputable place like Rock Auto. I'd pass on Amazon, too easy to get counterfeits. I would not replace them all at once as there isn't a need and you bring unknowns into the equation.
As for spark plugs, use what the manual or hood sticker says. NGK maybe?
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Mike
03 4runner Limited
1GR-FE V6 w/199k miles
Last edited by MikeinNH67; 12-29-2023 at 04:15 PM.
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12-29-2023, 10:12 PM
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#3
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Join Date: May 2009
Location: bradford,ma
Age: 54
Posts: 806
Real Name: brian
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Member
Join Date: May 2009
Location: bradford,ma
Age: 54
Posts: 806
Real Name: brian
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Denso x2. My v8's came with denso plugs. I would recommend finding what yours came with and use them.
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'08 4Runner Limited V8 Shadow Mica: Sport hood, bilstein 6112's, 5160's, b12 coils, Gibson cat back, 4runner XSP rims, Michelin X LT AS 275/55-20
'06 4Runner Limited V8 Salsa Red: bilstein 6112, 5160, Wheeler T12's, 4Runner XP wheels, Michelin AT2 275/55/20, Magnaflow Exhaust,, Powerstop brakes, sport hood
RIP.....'08 4Runner Limited V6: white, bilstein 6112s, 5160s, b12 , powerstop brakes, nav, TRD cat back, 4Runner XP rims, Michelin Defender LTX 275/55-20, sport hood
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12-30-2023, 08:45 AM
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#4
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Senior Member
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Join Date: Oct 2013
Location: illinois
Posts: 1,634
Real Name: Ron
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Senior Member
Join Date: Oct 2013
Location: illinois
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Real Name: Ron
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As was said, why replace all your coils? Can't imagine they need replacement, maybe one, but certainly not all. And go OEM, or Denso, you'll be assured of quality. Long term durability seems to be suspect on the big aftermarket names, MSD, Accel, etc.
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2003 Limited, V8, AWD. K&N, Dobinson IMS/FJ springs,, SPC UCA, Super Pro bushings in front LCA and in all rear control arms, Michelin 265/65R17 LTX/Defenders, stock wheels with homemade center caps, Stop Tech slotted rotors w/Posi Quiet pads all around, spare tire relocated to inside cargo area.
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12-31-2023, 11:44 AM
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#5
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Join Date: Oct 2023
Location: SFV, Calif.
Posts: 175
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Join Date: Oct 2023
Location: SFV, Calif.
Posts: 175
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What the others said. Denso is OEM. Pull all coils and inspect housing for cracks. Replace if found. Denso is about $60 each so a significant savings.
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01-05-2024, 09:41 AM
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#6
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Join Date: Jun 2012
Posts: 482
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Member
Join Date: Jun 2012
Posts: 482
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Quote:
Originally Posted by rdruss
As was said, why replace all your coils? Can't imagine they need replacement, maybe one, but certainly not all. And go OEM, or Denso, you'll be assured of quality. Long term durability seems to be suspect on the big aftermarket names, MSD, Accel, etc.
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I had 1 go bad on mine recently. Maybe its not something that usually goes bad but if.you found 1 bad spark plug, do you replace just that 1 or do you replace all of them? I replaced all 8 coil packs on mine just for peace of mind at 225k. Denso all the way though, Summit Racing got them to me next day.
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2007 Sport Edition V8 4WD w/Nav, JBL and rear seat entertainment, Fox 2.5 R/R coilovers, FJC rear springs with Fox 2.0 Pro series shocks, Rear ARB locker, 305/70R17 Ridge Grapplers, DT short headers
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01-05-2024, 04:32 PM
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#7
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Senior Member
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Join Date: Dec 2018
Location: New Hampshire
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Real Name: Mike
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Senior Member
Join Date: Dec 2018
Location: New Hampshire
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Real Name: Mike
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Quote:
Originally Posted by thegame7
I had 1 go bad on mine recently. Maybe its not something that usually goes bad but if.you found 1 bad spark plug, do you replace just that 1 or do you replace all of them? I replaced all 8 coil packs on mine just for peace of mind at 225k. Denso all the way though, Summit Racing got them to me next day.
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Spark plugs don't fail like coils do, replacing all of them at once could bring issues into the system and with that confusion. Generally best to replace this type of hardware one piece at a time. If you happen to have 2 junk coils out of 8 which you replaced all of, think of the pain this would bring trying to figure out what is going on. Possibility is lower with quality coils, way higher with aftermarket of course. Plus you're touching 8 connectors and bolts, here those bolts make break from being seized.
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Mike
03 4runner Limited
1GR-FE V6 w/199k miles
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