Spark plug Bosch or OEM Subaru

PartReview Score

Rank #3 in ranking

198

145

264

3.3

Acceleration

3.0

Idle

3.2

Starting

3.0

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Average rating

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Car

PartReview Score

Rank #13 in ranking

3.7

Acceleration

4.0

Idle

5.0

Starting

4.0

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Reviews

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Bosch

OEM Subaru

Bosch › Spark plug

tomasty 17 Nov 2011, 04:49

Acceleration:

Rating 4.5

The plug they sent me (Bosch #4417 FGR7DQP Platinum +4) runs absolutely fine on my engine, actually it feels better then before, but I just worried if it is indeed not the correct plug, will it do harm to my engine?

Pros: improved engine feel, smooth operation

Cons: worried about compatibility, potential engine harm

Vehicle: Volkswagen Phaeton

Part number: 4417 FGR7DQP PLATINUM +4

Bosch › Spark plug

audiguy05 9 Nov 2011, 17:03

Acceleration:

Rating 4.5

The Bosch side fires are an AAN plug that has a removable top. I will probably use those, they worked great with my B5 S4.

Pros: worked great

Vehicle: Audi S4

Bosch › Spark plug

pimS 3 Sep 2011, 06:52

Acceleration:

Rating 4.0

I've been using bosch FD5POR aka rs2 plugs. I'm quite pleased with them.

Pros: quite pleased

Part number: FD5POR

Bosch › Spark plug

udderpowerr 16 Feb 2011, 20:51

Acceleration:

Rating 5.0

Bosch F5DP0R on a T3/T4 50 trim at 25psi daily. Love it.

Pros: love it, reliable

Vehicle: Audi A4

Part number: F5DP0R

Bosch › Spark plug

A3 jetta* 10 Feb 2011, 00:41

Acceleration:

Rating 4.5

I've been running BOSH+ and it feels great!!

Pros: feels great

Vehicle: Volkswagen Jetta

Bosch › Spark plug

vizzy 9 Feb 2011, 04:00

Rating 5.0

I've used Bosch plugs for many years all types and never ever had one single issue.

Pros: no issues, reliable for years

Bosch › Spark plug

FL 2.0L 13 Sep 2008, 16:41

Acceleration:

Rating 3.5

Bosch FR8DC+ perform well and you won't have to worry about seized plugs. You might have to change them sooner.

Pros: perform well, no seized plugs

Cons: change sooner

Vehicle: Volkswagen

Part number: FR8DC+

Bosch › Spark plug

FRESH WHITE TEE 3 Jul 2012, 05:46

Idle:
Acceleration:

Rating 1.0

Bought Bosch platinum's and red bremi wires. swap everything all out, the misfires alot worse.

Cons: misfires alot worse

Bosch › Spark plug

CasuallyWreckless 21 Jun 2012, 07:14

Rating 1.0

Personally I've never had any luck with ngk's in any of my vr's always just run Bosch plugs and wires....

Cons: no luck

OEM Subaru › Spark plug

DRedman45 2 May 2012, 17:00

Rating 1.0

a spark plug job on an STI can be a 6+ hour job :thumbdown:

Cons: spark plug job difficult

Vehicle: Subaru

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