Check connecting rod bolt stretch accurately with ARP billet rod bolt stretch gauges. They are highly recommended when installing rod bolts and other fasteners where it is possible to measure the length of the bolt after tightening. Improper installation, rather than faulty parts, is the main cause of engine rod failures. To ensure proper installation, it is important to check the rod bolt stretch by performing a series of torqueing and loosening and recording the readings. This may seem like a lot of work, but it will ultimately save time and prevent the possibility of a failed engine rod and the damage that can result. When installing new connecting rods, it is important to follow the manufacturer's specifications for torque and bolt stretch. These specifications have been determined through extensive testing by scientists and engineers who specialize in this area. Engines are subject to significant stresses, particularly in high-performance applications. The strength of the engine depends on its weakest component, and a failed rod bolt can be particularly detrimental. Unlike most fasteners in an engine, both ends of the rod bolt are accessible, making it easier to ensure a strong connection. Learn More

ARP 104-6006 Porsche 914, 912E, VW Type 4 1.7, 1.8, 2.0 Rod Bolt Kit Connecting Rod Bolts, High Performance Series, 8740 Chromoly Steel, fits VW Type 4, Porsche 914, and 912E, 1.7, 2.0L, Set of 12. Special order item - please call for availability and lead time before placing your order.

Installation Method for Porsche Rod Bolt Kit

Part Number: 104-6006
Application: Porsche 1.7L & 2.0L Type IV Press Fit

1. Please check the part-number(s) for your application against the part-number(s) listed on the instruction sheet.
2. Make sure there is an adequate chamfer around the top of the connecting rod bolt hole to clear the radius under the head of the bolt.
3. Press the bolts into the connecting rods and install the rod caps.
4. Use ARP Ultra-Torque Fastener Assembly Lubricant to lubricate the threads of the bolt and the nut face. Then install the nuts onto the bolts and tighten them hand tight.
5. ARP recommends using the STRETCH METHOD when tightening the bolts. Following the instructions for using a stretch gauge, stretch the bolts to .0055 - .0060.
6. If you do not have a stretch gauge, torque the bolts to 40 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
7. The connecting rods should always be re-sized after new rod bolts are installed.
8. A log should be kept on the original non-torqued length of each bolt. Bolts that have any permanent deformation or have increased in non-torqued length by more than .001 in. should be replaced.

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ARP 204-6001 Porsche 911 M10 Connecting Rod Bolt Kit ARP Porsche 911/930 M10 Connecting Rod Bolt Kit. Fits 2.2L Porsche 911 engines on up through the 3.0 SC with factory M10 connecting rod bolts. Don't risk a failure by reusing weak factory rod bolts. Upgrade to ARPs and never worry about your rod bolts ever again!

Installation Method for Porsche Rod Bolt Kit

Part Number: 204-6001
Application: Porsche 911 (M10) Press Fit

1. Please check the part-number(s) for your application against the part-number(s) listed on the instruction sheet.
2. Make sure there is an adequate chamfer around the top of the connecting rod bolt hole to clear the radius under the head of the bolt.
3. Press the bolts into the connecting rods and install the rod caps.
4. Use ARP Ultra-Torque Fastener Assembly Lubricant to lubricate the threads of the bolt and the nut face. Then install the nuts onto the bolts and tighten them hand tight.
5. ARP recommends using the STRETCH METHOD when tightening the bolts. Following the instructions for using a stretch gauge, stretch the bolts to .0095 - .0100.
6. If you do not have a stretch gauge, torque the bolts to 50 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
7. The connecting rods should always be re-sized after new rod bolts are installed.
8. A log should be kept on the original non-torqued length of each bolt. Bolts that have any permanent deformation or have increased in non-torqued length by more than .001 in. should be replaced.

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ARP Porsche 924/944/928/968 Connecting Rod Bolt Kit. For use on Porsche 924 S (1986 to 1988), Porsche 944, 944S, 944 Turbo, 944/2 (S2) (1982 to 1991), Porsche 928 (1978 to 1995), and Porsche 968 (1992 to 1995). Don't risk a failure by reusing weak factory rod bolts. Upgrade to ARPs and never worry about your rod bolts ever again!

Installation Method for Porsche Rod Bolt Kit

Part Number: 204-6002
Application: Porsche 944 Press Fit

1. Please check the part-number(s) for your application against the part-number(s) listed on the instruction sheet.
2. Make sure there is an adequate chamfer around the top of the connecting rod bolt hole to clear the radius under the head of the bolt.
3. Press the bolts into the connecting rods and install the rod caps.
4. Use ARP Ultra-Torque Fastener Assembly Lubricant to lubricate the threads of the bolt and the nut face. Then install the nuts onto the bolts and tighten them hand tight.
5. ARP recommends using the STRETCH METHOD when tightening the bolts. Following the instructions for using a stretch gauge, stretch the bolts to .0105 - .0110.
6. If you do not have a stretch gauge, torque the bolts to 55 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
7. The connecting rods should always be re-sized after new rod bolts are installed.
8. A log should be kept on the original non-torqued length of each bolt. Bolts that have any permanent deformation or have increased in non-torqued length by more than .001 in. should be replaced.

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ARP 204-6003 Porsche 2.0 911 914-6 Connecting Rod Bolt Kit. Don't risk a failure by reusing weak factory rod bolts. Upgrade to ARPs and never worry about your Porsche connecting rod bolts ever again!

Installation Method for Porsche Rod Bolt Kit

Part Number: 204-6003
Application: Porsche 2.0L 911S (1969) Press Fit

1. Please check the part-number(s) for your application against the part-number(s) listed on the instruction sheet.
2. Make sure there is an adequate chamfer around the top of the connecting rod bolt hole to clear the radius under the head of the bolt.
3. Press the bolts into the connecting rods and install the rod caps.
4. Use ARP Ultra-Torque Fastener Assembly Lubricant to lubricate the threads of the bolt and the nut face. Then install the nuts onto the bolts and tighten them hand tight.
5. ARP recommends using the STRETCH METHOD when tightening the bolts. Following the instructions for using a stretch gauge, stretch the bolts to .0090 - .0095.
6. If you do not have a stretch gauge, torque the bolts to 50 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
7. The connecting rods should always be re-sized after new rod bolts are installed.
8. A log should be kept on the original non-torqued length of each bolt. Bolts that have any permanent deformation or have increased in non-torqued length by more than .001 in. should be replaced.

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ARP 204-6004 Porsche 911 RSR Titanium Ti Connecting Rod Bolt Kit Unquestionably the most important fasteners in any engine are the connecting rod bolts, as they hold the key to the entire rotating assembly. A broken bolt will lead to catastrophic engine failure. As you can imagine, the most critical joint is where the connecting rod halves mate. The rod bolts must support the primary tension loads caused by each rotation (or cycle) of the crankshaft. When the crank rotates, the big end of the connecting rod essentially becomes oval-shaped and the rod bolts bend. As the crankshaft continues to rotate, the rod becomes round again. With alternating tension loads and cyclic bending of the bolts, it is very important to install fasteners that are able to exert a clamping force greater than the load imposed upon the joint (tension). In addition to utilizing a rod bolt with sufficient strength to withstand the tremendous cyclical strains placed upon it, it is absolutely imperative that the bolts be properly tightened. The preferred method of monitoring the correct amount of tension is through use of a stretch gauge. This is far more accurate than using a torque wrench. Moreover, through subsequently checking the rod bolts length at teardowns, it is possible to determine if it has been stressed beyond safe limits and must be replaced. For the most severe applications, in conjunction with aftermarket I-beam rods, ARP has developed the "Pro" Series Wave-Loc bolts. These ultra heavy-duty rod bolts are made from a special material designed ARP2000 and feature a black oxide finish. It has approximately 200% the fatigue life of 8740 chrome moly steel and has a tensile strength of 220,000 psi, and is capable of more than 12,000 lbs clamping force. Don't risk a failure by reusing weak factory rod bolts. Upgrade to ARPs and never worry about your Porsche connecting rod bolts ever again! Please note this is a special order item; call for availability and lead time.

Installation Method for Porsche Rod Bolt Kit

Part Number: 204-6004
Application: Porsche RSR Titanium Rod

1. Please check the part-number(s) for your application against the part-number(s) listed on the instruction sheet.
2. Make sure there is an adequate chamfer around the top of the connecting rod bolt hole to clear the radius under the head of the bolt.
3. Press the bolts into the connecting rods and install the rod caps.
4. Use ARP Ultra-Torque Fastener Assembly Lubricant to lubricate the threads of the bolt and the nut face. Then install the nuts onto the bolts and tighten them hand tight.
5. ARP recommends using the STRETCH METHOD when tightening the bolts. Following the instructions for using a stretch gauge, stretch the bolts to .0095 - .0100.
6. If you do not have a stretch gauge, torque the bolts to 50 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
7. The connecting rods should always be re-sized after new rod bolts are installed.
8. A log should be kept on the original non-torqued length of each bolt. Bolts that have any permanent deformation or have increased in non-torqued length by more than .001 in. should be replaced.

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ARP 204-6005 Porsche M9 Rod Bolt Kit. Fits 3.2L Porsche 911 and up 930/964/993 models with factory M9 connecting rod bolts. Don't risk a failure by reusing weak factory rod bolts. Upgrade to ARPs and never worry about your Porsche connecting rod bolts ever again!

Installation Method for Porsche Rod Bolt Kit

Part Number: 204-6005
Application: Porsche 911/930 Turbo & 933 (M9) Press Fit

1. Please check the part-number(s) for your application against the part-number(s) listed on the instruction sheet.
2. Make sure there is an adequate chamfer around the top of the connecting rod bolt hole to clear the radius under the head of the bolt.
3. Press the bolts into the cap then install onto the connecting rods.
4. Use ARP Ultra-Torque Fastener Assembly Lubricant to lubricate the threads of the bolt and the nut face. Then install the nuts onto the bolts and tighten them hand tight.
5. ARP recommends using the STRETCH METHOD when tightening the bolts. Following the instructions for using a stretch gauge, stretch the bolts to .0100 - .0105.
6. If you do not have a stretch gauge, torque the bolts to 40 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
7. The connecting rods should always be re-sized after new rod bolts are installed.
8. A log should be kept on the original non-torqued length of each bolt. Bolts that have any permanent deformation or have increased in non-torqued length by more than .001 in. should be replaced.

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ARP 204-6301 M96/M97 Porsche 986/987/996/997 M9 Rod Bolt Kit. Fits Boxster, Cayman, and 911 models from 1997 through 2008 with the factory cracked cap connecting rods. The stock rod bolts are a torque to yield (TTY) bolt, meaning they must be replaced. ARP rod bolts are a must when rebuilding any 1997-2008 Porsche Boxster, Cayman, or 911 model with M96 or M97 engine and retaining the factory connecting rods to prevent costly rod bolt failures due to stretched rod bolts. Don't risk a failure by reusing weak factory rod bolts. Upgrade to ARPs and never worry about your Porsche connecting rod bolts ever again! If you plan on tracking your car or you are increasing your displacement, consider upgrading to Carrillo rods which come with upgraded rod bolts as well as coated rod bearings.

Installation Method for Porsche Rod Bolt Kit

Part Number: 204-6301
Application: Porsche 996 / 997 / 986 / 987 (M9) Cap Screw without Washer

1. Please check the part-number(s) for your application against the part-number(s) listed on the instruction sheet.
2. Make sure there is an adequate chamfer around the bolt hole on the connecting rod cap to clear the radius under the head of the bolt.
3. Use ARP Ultra-Torque Fastener Assembly Lubricant to lubricate the threads of the bolt and the under head of the bolt. Then install the bolts and tighten them hand tight.
4. ARP recommends using the STRETCH METHOD when tightening rod bolts. Following the instructions for using a stretch gauge, stretch the bolts to .0095 - .0100.
5. If you do not have a stretch gauge, torque the bolts to 45 ft-lbs using ARP Ultra-Torque Fastener Assembly Lubricant.
6. The connecting rods should always be re-sized after new rod bolts are installed.
7. A log should be kept on the original non-torqued length of each bolt. Bolts that have any permanent deformation or have increased in non-torqued length by more than .001 in. should be replaced.

Learn More