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VW MKIII GTI 2.0L 8V 136mm head stud set + MLS decompression Head Gasket 2.5mm

Marsoni M251S
Sale price$149.90
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VW MKIII GTI 2.0L 8V 136mm head stud set + MLS decompression Head Gasket 2.5mm136 mm VW cylinder head stud set Installs using 3 16 Allen wrench 12 point precison ground heat treated nuts 12 point Nuts and washers precision ground 180. 000 psi tensile strength M11 Thread studs, please be sure that your OEM bolts have the same thread before purchase Replaces 116mm OEM bolts Maximum Torque 72 ft lb Special cylinder head gasket for turbo conversion With this special Turbo multilayer metal cylinder head gasket The compression
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
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4.4 ★★★★★
Based on 1402 reviews
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J
Verified Purchase
Joe H.
Draper, US
★★★★★ 5
Very Expensive
Had one cylinder misfiring so replaced coil and spark plug. Runs fine now, but old plug looked shot after only 5 months so I think the coil was the problem. Really good plug so far but very expensive.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
R
Verified Purchase
rkab8745
San Leandro, US
★★★★★ 5
A reliable set of spark plugs.
They’re made in Germany, what else can you say
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 5
Work as well as the NGK's
Bought for a 2016 Mazda 6, I had NGK's in it for 5 months and had misfires, didnt have the money to throw more NGK's at it for troubleshooting. Bought these to try and they work great so far.
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Reviewed in the United States on April 29, 2026
C
Verified Purchase
Christopher D. Bodirsky
Birmingham, US
★★★★★ 4
Faulty plug? Otherwise great set
Definitely better than the old plugs that probably had 80k miles on them. The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine. Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.
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Reviewed in the United States on April 27, 2026
B
Verified Purchase
Britincali
Lowell, US
★★★★★ 5
Upgrade from OEM
After seeing a quite ludicrous $403 quote to change 4 spark plugs in a Mazda3 I decided to show my son how easy it is. These were an upgrade from OEM parts. They were gapped perfectly for the car. They took 20mins to fit and work fine.
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Reviewed in the United States on February 11, 2026

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