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DISPLAYING 1 to 4 (of 4 products)
91410317101/4
Product Information
Product Information
Connection rod bolts M10 and nuts.
SET OF 12.

Fits:
Porsche 911TE (1972 - 1973)
Porsche 911TV (1972 - 1973)
Porsche 911TK (1973 - 1973)
Porsche 911S (1970 - 1973)
Porsche RS (1973 - 1973)
Porsche RSR 2.8L (1973 - 1973)
Porsche 911 2.7 (1974 - 1977)
Porsche 911 3.0L Carrera (1976 - 1977)
Porsche 911 SC 3.0L (1978 - 1983)
Porsche 911 Turbo 3.0 (1975 - 1977)

Diagram Ref No 18

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91410317101
91410317100
91410317101
204-6001
90110317302
90110317300
93010317400
90110317102
90110317100

The product you are viewing cross references to these numbers
90110117300/4
Product Information
Product Information
Crankcase through bolt kit. SET OF 11
Porsche 911 2.0L to 2.7L.

arp

Fits:
Porsche 911 2.0L , 2.2L , 2.4L , 2.7L

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

90110117300
90110117300
204-5407
2045407
90110116101
90110116102
90110116103
99907000402
99907000403

The product you are viewing cross references to these numbers
SL-TB-
Product Information
Product Information

Engine case through bolt set, titanium. 

Kit Contents
Ti Alloy Studs x 11
Ti Alloy Washers x 22
Ti Alloy 12-point Nuts x 11

Porsche Motorsports employed titanium alloy engine case fasteners on many of their famous race cars, including the 904, 908, 935, 962, and some modern LMP2.

silverlake

Fits:
Porsche 911
Porsche 964
Porsche 993

Air-cooled Porsche 911 engine case through bolts in high-strength high-purity Titanium alloy. Including studs, washers, and  nuts.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

SL-TB-
90110117300
90110116103
99907000403
93010117306
93010117201
95910117200
95910117302

The product you are viewing cross references to these numbers
99310117054/4
Product Information
Product Information
Engine head studs. Set of 24 head studs with nuts and washers.

SET OF 24
Head stud kit for Porsche 2.0L-3.8L air-cooled engines

Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98

Diagram Ref No 2

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99310117054
99310117051
99310117053
204-4206
90110117203
91110117200
93010117000
99310117054

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DISPLAYING 1 to 4 (of 4 products)
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About Engine Rods and Bolts

Porsche Connecting Rods & Performance Bolts - High-Strength Engine Internals

Connecting Rods and Performance Bolts are critical engine internals responsible for transferring combustion forces from the pistons to the crankshaft while maintaining precise engine geometry under extreme load. In high-performance, tuned, or high-mileage Porsche engines, upgraded rods and bolts provide the strength and reliability required to safely handle increased power and RPM.

Available from Design911, this category includes high-strength Porsche connecting rods and performance-grade rod bolts engineered for demanding engine builds, rebuilds, and motorsport applications.

What Do Rods & Bolts Do?

Rods and bolts form the structural link between the piston and crankshaft, enduring immense forces every engine cycle.

Core Functions:

  • Transfer combustion energy to the crankshaft.
  • Maintain correct piston motion and alignment.
  • Withstand tensile and compressive forces at high RPM.
  • Secure the rotating assembly under extreme load.
  • Support reliable operation in performance engines.

High-quality rods and bolts are essential for engine durability and safety.

Why Do Rods & Bolts Fail?

Standard factory rods and fasteners are designed for original power levels and daily driving. Failures can occur due to:

  • Increased cylinder pressure from tuning or forced induction.
  • High RPM stretching standard rod bolts.
  • Metal fatigue from heat cycling and age.
  • Detonation causing shock loads through the rotating assembly.
  • Reuse of torque-to-yield bolts during rebuilds.

Rod or bolt failure often results in catastrophic engine damage, including broken blocks or crankshaft failure.

Why Upgrade Rods & Bolts?

Upgraded rods and performance bolts are designed to exceed the limits of factory components.

Upgrade Benefits:

  • Stronger forged steel or billet rod construction.
  • High-tensile performance bolts for improved clamping force.
  • Increased safety margin for high-output engines.
  • Improved reliability for track, race, and tuned applications.
  • Essential upgrade during engine rebuilds.

Upgrading rods and bolts protects the bottom end and enables safe power increases.

Highlights

  • High-strength Porsche connecting rods and performance bolts
  • Designed for tuned and motorsport engines
  • Improved resistance to stretching and fatigue
  • Ideal for engine rebuilds and power upgrades
  • Proven reliability in high-load applications       

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