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The ARP 2084305 High Performance 12-Point Cylinder Head Stud Kit is a vehicle-specific, premium-grade 8740 alloy steel kit designed for Honda D16Y engines. Heat-treated to 200,000 psi and centerless ground for perfect fitment, these studs deliver exceptional strength, fatigue resistance, and optimal clamping force to ensure superior cylinder head sealing—ideal for high-compression and forced induction setups.
| ASIN | B000CFS2DK |
| Best Sellers Rank | #177,591 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Performance Engine Head Bolt Sets |
| Brand | ARP |
| Color | Grey |
| Compatible Groove Diameter | 0.65 Inches |
| Customer Reviews | 4.8 4.8 out of 5 stars (145) |
| Drive System | Front-Wheel Drive |
| Exterior Finish | Painted |
| Fastener Size | 0.625 inches |
| Fastener Type | Stud Bolt |
| Finish Types | Black oxide |
| Global Trade Identification Number | 00672036030155 |
| Grade Rating | Grade 8740 |
| Head Type | Honda D16Y |
| Included Components | Head Stud & Bolt Kits |
| Item Diameter | 0.44 Inches |
| Item Hardness | Grade 8740 |
| Item Type Name | Head Stud & Bolt Kits |
| Item Weight | 2 Pounds |
| Manufacturer | ARP |
| Manufacturer Grade | premium |
| Material Type | Cold-forged Alloy Steel |
| Maximum Shear Strength | 90 ksi |
| Metal Type | Alloy Steel |
| Model | 2084305 |
| Number Of Items | 1 |
| Number of Pieces | 12 |
| Part Number | 2084305 |
| Screw Head Style | 12-point |
| Screw Point Style | 12-Point |
| Set Name | Kit |
| Set Screw Thread Type | UNC |
| Size Name | 0.625 inches UNC |
| Thread Class | 2A |
| Thread Coverage | Fully Threaded |
| Thread Size | 0.625 inches |
| Thread Style | Right Hand |
| Thread Type | Unc |
| UPC | 672036030155 |
| Unit Count | 1.0 Count |
| Warranty Description | Manufacturer Warranty |
N**L
Genuine parts at reasonable price
Have them installed but havent ran the engine yet. Genuine ARP quality
O**N
Worth it
I've been building engines for years and I've had no problems with ARP hardware, ever. From 4 cylinders to v8s. I will always choose ARP for any of my performance builds. The price is worth it, buy once cry once. The quality of arp surpasses any other brand you can find. Cheap hardware can break, these won't.
A**I
5/5 stars
perfect fit for the D16Y8. only returned bc i got some gifted from a friend
M**.
Better then OEM
These are the best way to go when doing a cylinder head job. Far exceeds even factory OEM bolts.
G**D
D16Y8
Installed on my turbo 96 civic with a D16Y8. Product came well packaged and all parts there. Some have said theirs was opened / installed before, Mine was sealed with plastic wrap and nothing was missing / opened. Install is super easy. 4mm allen for the top of the stud for install and a 12mm 12pt socket for torquing down the nuts.
W**T
Arp excellent brand great parts
Definitely they were real brand great parts definitely recommend stock head bolts are only good for I'd say one retort until they stretch the threads bought these never had a problem again good purchase
J**T
does its job
arp rules.arp forever.if everybodys parts were as good as arps,the world would be a better pklace
B**K
Great product.
You can never go wrong with arp head studs. Wether you are upgrading your engine for performance or just using them for added protection. They get the job done!
D**A
Pedí la tornillería arp,En tiempos todo muy bien pero en el paquete llegó 10 espárragos,10 tuercas,9 arandelas y una pequeña tuerca qué ni al cazo. Me falta una arandela hubo un problema en el empaquetado.
J**B
Worked well, follow the instructions and you’ll have no issues
R**2
Got in an Amazon deal. Perfect.
Trustpilot
4 days ago
2 months ago