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pro series cylinder head studs with 12-point nuts - arp 2034204, ideal for toyota applications logo

Pro Series Cylinder Head Studs with 12-Point Nuts - ARP 2034204, Ideal for Toyota Applications Review

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Average

Revainrating 3 out of 5  
Rating 
3.0
🚀 Engines & Engine Parts, 🏎️ Performance Car Parts & Accessories

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Description of Pro Series Cylinder Head Studs with 12-Point Nuts - ARP 2034204, Ideal for Toyota Applications

The choice of many top professional engine builders for their all-out competition powerplants. Manufactured from a premium grade 8740 alloy that is heat-treated to 200,000 psi, which is considerably stronger than Grade 8 hardware. Kit comes complete with premium quality parallel ground washers and compact 12-point style nuts. 1000% better fatigue strength than many other studs. Centerless ground to be as perfectly concentric as possible.

Reviews

Global ratings 3
  • 5
    2
  • 4
    0
  • 3
    0
  • 2
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  • 1
    1

Type of review

Revainrating 1 out of 5

ARP Cylinder Head Bolts Underperform

Despite their "strong and durable" reputation, these bolts fell short in my automotive experience. I encountered difficulty with installation and they didn't provide the expected performance in the engine.

Pros
  • Strong and durable
Cons
  • Difficult installation, poor performance

Revainrating 5 out of 5

Only used 1 month

I traded in my 1991 sw20 turbo after a month of installing arp studs. I rebuilt the engine with a big turbo and intercooler and didn't need a huge power upgrade so I put everything together. Great quality to be honest. I would recommend it.

Pros
  • Good price
Cons
  • Miscellaneous Other

Revainrating 5 out of 5

Best insurance for rebuild/work with head gasket

Very good quality head bolts. I would recommend getting a very thin walled 12mm 1/2 head. But there was more than enough lube in the package, I still have 90% as the washer nuts and top bolts are a bit tight. I would recommend being required when restoring 3sgte.

Pros
  • Decent performance
Cons
  • Some nuances