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- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1975-1977 3.0L Turbo (930)
This OE Match set of 12 connecting rod bolts replaces the complete set of big-end fasteners needed for a full rebuild of Porsche 911 and 930 engines. Manufactured to match factory tensile strength and thread standards, these bolts ensure uniform clamping across all six connecting rods.
SET OF 12 bolts (sufficient for 6 connecting rods)
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 2.7L (1974 - 1977)
Porsche 911 3.0L Carrera (1976 - 1977)
Porsche 911 SC 3.0L (1978 - 1983)
Porsche 911 Turbo 3.0L (1975 - 1977)
Diagram Ref No 18.
This set provides the complete matched hardware needed to secure all connecting rod caps, ensuring even preload, balanced bearing crush, and stable rotation of the crankshaft assembly.
Replacing all rod bolts as a full set ensures uniform strength and eliminates risks caused by mixing old and new hardware, fatigue-weakened bolts, or uneven clamping forces.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91410317101
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1975-1977 3.0L Turbo (930)
Sold each - 12 required per car
Maintain engine reliability during rebuild work with this OE
Connecting Rod Bolt 91410317101. The connecting rod bolt is a critical internal
engine fastener used to secure the connecting rod cap to the connecting rod
body around the crankshaft journal.
- 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 2.7L (1974 - 1977)
- Porsche 911 3.0L Carrera (1976 - 1977)
- Porsche 911 SC 3.0L (1978 - 1983)
- Porsche 911 Turbo 3.0L (1975 - 1977)
Diagram ref no 18
Although small, this component is subjected to extreme loads every time the engine runs. It must maintain precise clamping force under high RPM, combustion pressure, heat and vibration. For this reason, connecting rod bolts should be treated as essential engine rebuild hardware and replaced whenever the connecting rods are removed or serviced.
What Does a Connecting Rod Bolt Do?
The connecting rod bolt clamps the rod cap securely to the connecting rod.
Its main functions include:
- Securing the connecting rod cap
- Maintaining bearing alignment
- Supporting correct crankshaft rotation
- Preserving bearing crush
- Withstanding high engine loads
- Helping prevent internal engine failure
Correct clamping force is vital for engine durability and safe operation.
Why Do Connecting Rod Bolts Fail?
Connecting rod bolts operate under severe stress and can weaken over time.
Common causes of failure include:
- Metal fatigue
- Overstretching during previous installation
- Incorrect torque procedures
- High RPM engine use
- Heat cycling
- Thread damage
- Reuse during engine rebuilds
- General age and wear
Many connecting rod bolts are considered single-use components and should not be reused once removed.
When Should They Be Replaced?
Replacement is strongly recommended when:
- Rebuilding the engine
- Removing connecting rods
- Replacing big end bearings
- Servicing the crankshaft
- Building a performance engine
- Inspecting high-mileage engines
- Previous torque history is unknown
Replacing rod bolts during rebuild work is inexpensive protection against serious engine damage.
Why Replacement Matters
A failed connecting rod bolt can cause catastrophic engine failure.
Benefits of replacement include:
- Correct clamping force
- Improved engine reliability
- Protection of crankshaft and bearings
- Reduced risk of rod cap movement
- Professional rebuild standards
- Long-term engine durability
- Greater peace of mind
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91410317101
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 914 (1970-1976)
This connecting rod nut is used on the big-end of the connecting rod, clamping the rod cap securely to the rod during engine operation.
12 per engine. Price is for each
Fits:
Porsche 911 1965 - 1983
Porsche 911 (930) Turbo 1975 - 1977
Porsche 914 1970 - 1976
Diagram ref no 21.
Installed on the connecting rod bolts at the big end, this nut provides the required clamp load to keep the rod assembly rigid under combustion forces and inertia at speed. Built to OEM-style dimensions (commonly listed as M10), it supports accurate torqueing and secure retention under high RPM loads and repeated heat cycles - ideal for rebuilds, top-end refreshes, or bottom-end assembly work.
Con-rod fasteners live in one of the harshest areas of the engine. Nuts can be damaged, corroded, or compromised by previous over-torqueing or repeated reuse. Replacing with OE Match hardware helps ensure accurate torque application and dependable clamp load retention - critical for bearing life and engine reliability.
When to replace:
• During any engine rebuild involving connecting rod removal
• Nuts show thread damage, rounding, corrosion, or heat marking
• Evidence of incorrect prior assembly/torque history
• Preventive replacement on high-mileage or unknown-history engines
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110317302
The product you are viewing cross references to these numbers
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1975-1977 3.0L Turbo (930)
This bearing set directly replaces the factory standard-size bearings and includes all shells required for one engine rebuild. These bearings provide smooth, low-friction rotation between the connecting rod and crankshaft journal, maintaining the correct oil film clearance critical to engine reliability and longevity.
Fits:
Porsche 911 T-E 2.4L (US/Canadian Market - Mechanical Fuel Injection) 1972-1973
Porsche 911 T-V 2.4L (Rest of World - Carburetors) 1972-73
Porsche 911 T-K 2.4L (US/Canadian Market - K-Jetronic CIS) 1973
Engine Code(s): 91151, 91157, 91161, 91167, 91191, 91196
Porsche 911 E 2.4L 1972-73
Porsche 911 S 2.4L 1972-73
Porsche 911 Carrera RS 2.7L 1973
Engine Code(s): 91152, 91153, 91162,91163, 91183
Porsche 911 2.7L 1974-77
Porsche 911 S 2.7L 1974-77
Porsche 911 Carrera 2.7L 1974-76
Porsche 911 Carrera 3.0L 1976-77
Engine Code(s): 91192, 91197, 91141, 91146, 91181, 91186, 91193, 91198, 91142, 91143, 91144, 91148, 91149, 91182, 91189, 91185, 91190, 91194, 91199, 93002, 93012
Porsche 911 (930) Turbo 3.0L 1975-77
Engine Code(s): 93050, 93051, 93052, 93053, 93054
Diagram Ref. 23.
• Position: Connecting rod big-end journals
• Function: Maintains oil film clearance and crankshaft rotation stability
• Symptoms of Failure: Low oil pressure, engine knock, metal debris in oil
• Replacement Interval: During rebuild or low oil pressure diagnosis
• Benefits: OEM fit, stable lubrication, high load resistance, quiet operation
• Set Contents: Complete set for one engine (6 cylinders)
Rod bearings gradually wear due to high-speed loading, heat, and oil contamination.
Excessive clearance or bearing wear can lead to:
• Low oil pressure Metallic noise or “rod knock”
• Engine vibration or bearing seizure
Replace bearings:
• During every engine rebuild or crankshaft regrind
• If metal particles are found in oil
• When oil pressure is below specification or knocking occurs
Installing a new bearing set restores correct oil clearance, stable pressure, and long-term bottom-end reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91410314102
The product you are viewing cross references to these numbers