Head Studs
ARP head studs are high-performance fasteners that are designed to replace the factory head bolts in an engine. They are made from a special alloy steel that is heat-treated to increase its strength and durability. The head studs are longer than the factory head bolts, providing a more secure and stable connection between the cylinder head and the engine block.
In a Porsche engine, ARP head studs are recommended because they provide a higher level of safety and reliability. They can help to prevent engine failures caused by stretched or broken head bolts, which can lead to serious damage to the engine and other components. Additionally, ARP head studs can help to increase horsepower and torque by reducing the amount of flex in the cylinder head and to improve cylinder sealing, allowing your Porsche engine to make more power.
Overall, using ARP head studs in a Porsche engine can provide a number of benefits, including increased performance, improved reliability, and enhanced safety. They are a recommended upgrade for anyone looking to build a high-performance Porsche engine. They are also useful for high compression Porsche engines or those who are looking to increase the boost in their turbocharged Porsche engines.
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8 Item(s)
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ARP Cylinder Head Stud Kit for Porsche 914 912E VW Type 2/4
SKU: 201-02
$479.00LN Engineering exclusive ARP VW Type 2/4 and Porsche 914 912E cylinder head stud kit. Includes 8 short and 8 long studs, 16 nuts and washers, and ARP lube. Designed as a direct replacement for the factory head studs case threads and does not require inserts to be installed in case as is required when using Raceware RWE-1024 head studs. Upgraded cylinder head studs are required for all Type 4 engine builds utilizing our Nickies cylinders for optimal head and cylinder sealing. Learn More
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ARP 2000 Porsche 356 912 head stud kit inc. lube. Uses stock head fasteners.
SKU: 202-01
$399.00Our Porsche 356 and 912 ARP head studs have been manufactured by ARP for us since 2002 utilizing their upgraded ARP 2000 material over the standard ARP 8740 or stainless steel studs sold by other companies. These are specifically designed to provide accurate torque and tension on the cylinder head through repeated heat cycles and are the perfect complement to our Nickies cylinders. We recommend torquing to 24-28 ft/lb using the supplied ARP lube; it is also recommended that you re-torque the cylinder heads after the engine has been broken in and heat cycled several times. We also offer an ARP case thru-bolt as an optional upgrade that is an LN Engineering exclusive. ARP hardware is a must on all performance Porsche engine builds; ARP head studs are proven and tested for a lifetime of reliability and performance and are required for use with Nickies cylinders. (ARP or equivalent upgraded head studs can be used where OE head studs are not compatible or recommended). Learn More
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ARP 204-4206 Custom Age 625 Porsche 911 Head Stud Kit Inc. Nuts & Washers
SKU: 204-4206
$854.17ARP's 204-4206 Custom Age 625 Porsche 911 Head Stud Kit fits all air-cooled Porsche 911 engines from 1965 through 1998 and 2.0 through 3.8 911 including 930, 964, and 993 models. ARP's head studs are proven and tested for a lifetime of reliability and performance and are required for use with Nickies cylinders. (ARP or equivalent upgraded head studs can be used where OE head studs are not compatible or recommended). ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. ARP Pro Series include 12-point nuts and hardened parallel washers for an even load distribution and accurate torque readings. Case savers are recommended for all magnesium cases when replacing the head studs. Torque to the value specified in the ARP instructions using the ARP lube provided in the kit.Installation Method for Porsche Head Stud Kit
Part Number: 204-4206
Application: Porsche 2.0L-3.8L Air-Cooled Engines- Always verify the part number for your application with the part number on the side of box and the part number on the instruction sheet. This will help ensure you have the correct installation procedure for your specific application before installing any components.
- Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages plus proper fit, length, and dimension.
- To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if necessary with ARP Thread Chaser part number 912-0003 (M10 X 1.5).
- Screw the head studs into the left-hand and right-hand engine cases "HAND TIGHT ONLY". NOTE: LOCTITE MAY BE USED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED.
- Install the cylinder barrels and the cylinder heads as described in the Porsche factory service manual. Check for binding or misalignment.
- Lubricate the stud threads, nuts, and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low-quality lubricants are used.
- Install the camshaft housings onto the cylinder heads as described in the Porsche factory service manual. Note: The cylinder heads may have to be rotated slightly to align with the camshaft housing before final tightening the head studs.
- Following the manufacturer's recommended torque sequence, tighten the nuts in two equal steps to 38 ft-lbs with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Note: ARP Ultra-Torque Fastener Assembly Lubricant has been specifically designed to reduce tension preload scatter and eliminate the need to cycle high-performance engine fasteners before final installation. ARP Ultra-Torque far surpasses all requirements offered by previous ARP lubricants in terms of fastener preload repeatability and performance lubricating properties.
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ARP 204-4210 Porsche 911 996 997 Mezger 3.6L GT2/GT3/Turbo Head Stud Kit
SKU: 204-4210
$862.99ARP 204-4210 Porsche 911 996 997 Mezger 3.6L GT2/GT3/Turbo Head Stud Kit ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. ARP Pro Series kits are also available with 12-point nuts, and all studs come complete with hardened parallel washers for an even load distribution and accurate torque readings. Special order item - please call for availability and lead time before placing your order.Installation Method for Porsche Head Stud Kit
Part Number: 204-4210
Application: Porsche 3.6L Turbo Water-Cooled Engine- Always verify the part number for your application with the part number on the side of the box and the part number on the instruction sheet.
- Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages plus proper fit, length, and dimension.
- To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if necessary with ARP Thread Chaser part number 912-0003 (M10 X 1.5).
- Screw the head studs into the left-hand and right-hand engine cases "HAND TIGHT ONLY". NOTE: LOCTITE MAY BE USED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED.
- Install the cylinders and the cylinder heads as described in the Porsche factory service manual. Check for binding or misalignment.
- Lubricate the stud threads, nuts, and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low-quality lubricants are used.
- Following the manufacturer's recommended torque sequence, tighten the nuts in two equal steps to 38 ft-lbs with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Note: ARP Ultra-Torque Fastener Assembly Lubricant has been specifically designed to reduce tension preload scatter and eliminate the need to cycle high-performance engine fasteners before final installation. ARP Ultra-Torque far surpasses all requirements offered by previous ARP lubricants in terms of fastener preload repeatability and performance lubricating properties.
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ARP 204-4211 Porsche 944 2.5L SOHC/DOHC Head Stud Kit
SKU: 204-4211
$197.99ARP 204-4211 Porsche 944 2.5L SOHC/DOHC Head Stud Kit ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity. They're heat-treated prior to thread rolling and machining. ARP Pro Series kits are also available with 12-point nuts, and all studs come complete with hardened parallel washers for an even load distribution and accurate torque readings.Installation Method for Porsche Head Stud Kit
Part Number: 204-4211
Application: Porsche 2.5L SOHC/DOHC 944- Always verify the part number for your application with the part number on the side of box and the part number on the instruction sheet. This will help ensure you have the correct installation procedure for your specific application before installing any components.
- Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages plus proper fit, length, and dimension.
- To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if necessary with ARP Thread Chaser part number 912-0007 (M12 X 1.5).
- If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP THREAD SEALER.
- Screw studs into the block “HAND TIGHT ONLY”. NOTE: LOCTITE MAY BE USED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED. THE FASTENERS HOWEVER MUST BE TORQUED PRIOR TO THE LOCTITE SETTING UP.
- Install the cylinder head(s) and check for binding or misalignment.
- Lubricate the stud threads, nuts, and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low-quality lubricants are used.
- Following the manufacturer's recommended torque sequence, tighten the nuts in three equal steps to 100 ft-lbs with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Note: ARP Ultra-Torque Fastener Assembly Lubricant has been specifically designed to reduce tension preload scatter and eliminate the need to cycle high-performance engine fasteners before final installation. ARP Ultra-Torque far surpasses all requirements offered by previous ARP lubricants in terms of fastener preload repeatability and performance lubricating properties.
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ARP 204-4301 Porsche 3.0L DOHC 944 12pt Undercut Head Stud Kit
SKU: 204-4301
$186.99ARP 204-4301 Porsche 3.0L DOHC 944 12pt Undercut Head Stud Kit. Fits 944S2 and 968 models. ARP high performance cylinder head stud kits are precision centerless-ground and thread-rolled to Mil-S-8879 specs. A black oxide finish protects them from wear and corrosion, and ARP throws in hardened parallel washers for uniform load distribution and accurate torque readings. Keep your cylinders heads mounted securely with a set of ARP high performance cylinder head studs for your Porsche engine.Installation Method for Porsche Head Stud Kit
Part Number: 204-4301
Application: Porsche 3.0L DOHC 944- Always verify the part number for your application with the part number on the side of the box and the part number on the instruction sheet. This will help ensure you have the correct installation procedure for your specific application before installing any components.
- Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages plus proper fit, length, and dimension.
- To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if necessary with ARP Thread Chaser part number 912-0007 (M12 X 1.5).
- If the cylinder head studs protrude into a water jacket, lubricate the block threads of the studs with ARP THREAD SEALER.
- Screw studs into the block "HAND TIGHT ONLY". NOTE: LOCTITE MAY BE USED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED. THE FASTENERS, HOWEVER, MUST BE TORQUED PRIOR TO THE LOCTITE SETTING UP.
- Install the cylinder head(s) and check for binding or misalignment.
- Lubricate the stud threads, nuts, and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low-quality lubricants are used.
- Following the manufacturer's recommended torque sequence, tighten the nuts in three equal steps to 100 ft-lbs with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Note: ARP Ultra-Torque Fastener Assembly Lubricant has been specifically designed to reduce tension preload scatter and eliminate the need to cycle high-performance engine fasteners before final installation. ARP Ultra-Torque far surpasses all requirements offered by previous ARP lubricants in terms of fastener preload repeatability and performance lubricating properties.
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ARP 204-4707 M96/M97 Head Stud Kit 97-08 Porsche Boxster, Cayman, 911
SKU: 204-4707
$546.99ARP 204-4707 M96/M97 Head Stud Kit 97-08 Porsche Boxster, Cayman, 911 8740 Chromoly ARP Cylinder Head Stud Kit for 2.5, 2.7, 3.2, 3.4, 3.6, and 3.8 engines found in all Boxster, Cayman, and 911 models with the M96/M97 engine. The factory carrier bolts are torque to yield (TTY) and must be replaced. This ARP kit features bolts that are stronger (and reusable) and an upgrade of the factory stretch bolts for any build.Installation Method for Porsche Head Stud Kit
Part Number: 204-4707
Application: Porsche 3.4L Non-Turbo Water-Cooled Engine- Always verify the part number for your application with the part number on the side of the box and the part number on the instruction sheet.
- Clean and inspect all hardware prior to installation. Look for obvious defects or shipping damages plus proper fit, length, and dimension.
- To ensure proper thread engagement and accurate torque readings, clean ALL threads in the block. Chase if necessary with ARP Thread Chaser part number 912-0003 (M10 X 1.5).
- Screw the head studs into the left-hand and right-hand engine cases "HAND TIGHT ONLY". NOTE: LOCTITE MAY BE USED IF A PERMANENT MOUNTING OF THE STUDS IS PREFERRED.
- Install the cylinder heads as described in the Porsche factory service manual. Check for binding or misalignment.
- Lubricate the stud threads, nuts, and washers with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Then install the washers and the nuts onto the studs and tighten them hand tight. ARP recommends using the ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT that is provided with each kit as opposed to motor oil. This is due to higher friction on the studs as well as inconsistencies in the clamping force of the fasteners when motor oil or other low-quality lubricants are used.
- Following the manufacturer's recommended torque sequence, tighten the nuts in two equal steps to 60 ft-lbs with ARP ULTRA-TORQUE FASTENER ASSEMBLY LUBRICANT. Note: ARP Ultra-Torque Fastener Assembly Lubricant has been specifically designed to reduce tension preload scatter and eliminate the need to cycle high-performance engine fasteners before final installation. ARP Ultra-Torque far surpasses all requirements offered by previous ARP lubricants in terms of fastener preload repeatability and performance lubricating properties.
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T52140000 Billet Aluminum Porsche Cylinder Hold Down Nut w/ Delrin Inserts
SKU: T52140000LN
$49.00
$41.65
LN Engineering Billet Aluminum Cylinder Hold Down Nut featuring replaceable Delrin inserts. Threads onto your Porsche engine's 10mm head studs to hold your Porsche 911, 914-6, and 356/912 cylinders in place until you fit the cylinder heads. Sold as a set of 6 including a six replacement Delrin inserts. Features knurled ends and a matte clear anodized finish. Designed to work with ARP cylinder head studs with 10 x 1.5mm threads. Learn More
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