Precision Matters steering coupler is the last your Porsche 911 or 912 will ever need. Precision Matters billet steering coupler design is completely and totally fail-safe unlike the original; fits 1965 through 1989 models without any modifications. Learn More

For high compression and elevated boost turbocharged engines, we recommend applying a set of quality machined Ni-Resist Rings. These rings are intended to provide a high integrity, interlocking seal between the cylinders and heads. The TurboKraft Ni-Resist Ring Set includes a set of 6 CNC machined billet stainless steel rings built to exacting tolerances. One of the original origins on Porsche engines dates back to the Porsche 935 race cars. These were also referred to as Flame Ring, Le Mans Ring and 935 Head Rings. Application will require the cylinders and heads to have a specially machined groove. Learn More

For high compression and elevated boost turbocharged engines, we recommend applying a set of quality machined Ni-Resist Rings. These rings are intended to provide a high integrity, interlocking seal between the cylinders and heads. The TurboKraft Ni-Resist Ring Set includes a set of 6 CNC machined billet stainless steel rings built to exacting tolerances. One of the original origins on Porsche engines dates back to the Porsche 935 race cars. These were also referred to as Flame Ring, Le Mans Ring and 935 Head Rings. Application will require the cylinders and heads to have a specially machined groove. Learn More

Aircooled and Watercooled Porsche Cylinder Head Rebuild Service

RND rebuilt Porsche cylinder heads benefit from years of experience with thousands of Porsche heads rebuilt by our specialists to date. 100% of components are tested, reconditioned, or replaced and feature multi-angle Serdi valve job, Viton valve stem seals, and critical surfaces are diamond milled, exceeding original manufacturer specifications. All components are inspected and replaced if worn. M96/M97 heads are always pressure tested and all cylinder heads are vacuum tested after final assembly as part of our standard quality control checks.

Pricing and Options

New Valve Guides Installed: $35 each New Valve Seats Installed: $40 each Crack Repair/Welding: $CALL (No crack repair on M96/M97 cylinder heads) Broken Bolt/Stud or Thread Repair $25 each New/Upgraded Valve Springs & Retainers: $CALL Flame-ringing: $375 (Set of 6 Aircooled 911 Heads) Modify for Twin Plug: $475 (Set of 6 Aircooled 911 Heads) Cryogenic Treatment: $CALL Thermal Barrier / Thermal Dispersant Coatings: $CALL

Please note we do not flat rate pricing on cylinder head rebuilding for VW Type 4 / Porsche 914 / 912E or Porsche 356/912 engines; we do however offer new replacement Porsche cylinder heads. For engines that have or will see track or race use, we recommend replacing all valve seats, valves, springs, and retainers. Each head should have been individually boxed with rigid padding on all sides then each individual box put into a larger box with more padding on all sides. Use of plastic cases, bubble wrap, air pillows, peanuts, or shredded paper is not acceptable. Package your cylinder heads assuming they are going to be dropped or possibly launched out of a cannon. This service does not qualify for free shipping.

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Changing your oil on your 1965-1998 Porsche 911, 930, 964, or 993? Take advantage of our oil change bundle to save.

Originally co-developed by Joe Gibbs Racing Driven Oils and Raby's Aircooled Technology, DT50 is designed for high performance, vintage air-cooled engines like those found in Porsche 356, 911, 912, and 914 models. Utilizes advanced synthetic base oils to provide high temperature protection and high shear protection for high output, performance engines. High zinc content protects cams and lifters.

Formulated Specifically For High Output Air-Cooled Engines

DT50 utilizes advanced mPAO synthtetic base oils to provide protection for high operating temperature turbocharged engines. Also ideal for Porsche and Volkswagen air-cooled engines. Compatible with E85 and water/methanol injection. Viscosity typical of 15W-50. High Temp High Shear Protection Friction Reducing Additives ZDDP Anti-Wear Package Storage & Start-Up Protection

Please note: You'll need to verify which plug your vehicle needs and how many are needed before ordering: 993 models require Qty 1 of 94410719701LN 964 models require Qty 2 of 94410719701LN 911 models from 65 through 83 require Qty 2 91110717603LN- one is the for sump plate (if sump plate has a provision for a drain plug) and the other is for the oil tank (reservoir) 911 models 84 through 89 (including 964 models with the 3.3 Turbo through 91) require Qty 1 of 94410719701LN which fits the case and Qty 1 91110717603LN for the oil tank (reservoir) Learn More

Pauter's sought out to make their intermediate shaft gears better than the originals. Pauter has completely re-engineered their Porsche 911 Intermediate Shaft Gears to replace the original Porsche helical IMS gears with ones that are now straight-cut, perfect for your next performance Porsche engine build. Learn More

Pauter set out to make these replacement Porsche 911 billet rocker arms lighter, stronger, and able to handle more aggressive cam profiles. After nearly a year of engineering, development, and testing, Pauter has done just that. At 85 grams, our rocker comes in at 45 grams lighter than Porsche’s stock rocker arm, which amounts to about 1.2lbs of valve train weight in total. This is possible because the increase in material strength allows for a slim blade-like design (side by side comparison seen below). Due to our precision engineering and machining, per-rocker tolerance is generally around ±1.5 grams, whereas the stock rockers can differ by as much as 17 grams. These rockers are fully machined from billet tool steel, triple phase heat treated, and DLC coated for wear resistance and friction/drag reduction. The materials as well as treatment processes were selected for their proven performance and durability in a wide variety of severe duty applications. Lengthening of the radiused follower “shoe” increases the usable wear surface, allowing for a cam profile aggressiveness never before seen in the 911 rocker arm arena. During development stages prototypes were cycle tested both third party and in-house, using various cams at and far beyond normal racing RPM (over 10k) with excessive spring loads for many hours. Results of these tests allowed us to provide this product with the same confidence found in all Pauter offerings. Because of the marked increase in strength, wear resistance, and weight savings, these rockers allow the engine expert to employ a range of spring pressures best suited to your engine program. Accepts factory swivel foot adjusters (sold separately). NOTE: This item is normally in stock, however if we are out of stock, please call for current lead times. Learn More

Pauter set out to make these replacement Porsche 911 (993) billet rocker arms lighter, stronger, and able to handle more aggressive cam profiles. After nearly a year of engineering, development, and testing, Pauter has done just that. At 85 grams, our rocker comes in at 45 grams lighter than Porsche’s stock rocker arm, which amounts to about 1.2lbs of valve train weight in total. This is possible because the increase in material strength allows for a slim blade-like design (side by side comparison seen below). Due to our precision engineering and machining, per-rocker tolerance is generally around ±1.5 grams, whereas the stock rockers can differ by as much as 17 grams. These rockers are fully machined from billet tool steel, triple phase heat treated, and DLC coated for wear resistance and friction/drag reduction. The materials as well as treatment processes were selected for their proven performance and durability in a wide variety of severe duty applications. Lengthening of the radiused follower “shoe” increases the usable wear surface, allowing for a cam profile aggressiveness never before seen in the 911 rocker arm arena. During development stages prototypes were cycle tested both third party and in-house, using various cams at and far beyond normal racing RPM (over 10k) with excessive spring loads for many hours. Results of these tests allowed us to provide this product with the same confidence found in all Pauter offerings. Because of the marked increase in strength, wear resistance, and weight savings, these rockers allow the engine expert to employ a range of spring pressures best suited to your engine program. Accepts factory swivel foot adjusters (sold separately). NOTE: This item is normally in stock, however if we are out of stock, please call for current lead times. Learn More

Clevite 77 tri-metal coated performance STD connecting rod bearing set for 2.0/2.2 Porsche 911 engines. Made exclusively by Clevite for Automobile Associates of Canton. Learn More