Porsche 911T Type 911/91 Engine

Rated 5.00 out of 5 based on 26 customer ratings
(26 customer reviews)

$7,000.00

Listing Details

  • Engine Number: 6133837
  • 2,341cc 911/91 Flat-Six
  • Produced for 1973.5 Porsche 911T
  • Stored for Past ~12 Years
  • Bosch CIS Fuel Injection
  • Alternator, Fan, & Flywheel
  • Ignition Coil & Distributor
  • Heat Exchangers & Muffler
Available Options
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1973.5 Porsche 911T Type 911/91 Engine – Original 2.4L Flat-Six with Bosch CIS Injection

A highly desirable Type 911/91 2.4-liter flat-six originally built for a US-market 1973.5 Porsche 911T. This numbers-correct magnesium-case engine retains its Bosch CIS fuel injection, ignition setup, alternator, cooling system, heat exchangers, and muffler. According to the seller, the engine was running when removed approximately twelve years ago and has been stored indoors since—a strong foundation for restoration, rebuild, or a period-correct concours installation.

Factory Specification & Technical Details

  • Engine Type: 911/91

  • Displacement: 2,341cc

  • Bore x Stroke: 84mm × 70.4mm

  • Application: US-spec 1973.5 Porsche 911T (CIS introduction year)

  • Case Material: Magnesium

  • Case Stamping: ☆6133837☆ (correct for 1973.5 911T engines)

Included Components

  • Bosch CIS Fuel Injection System

    • Fuel distributor

    • Stainless-steel CIS airbox by Webb Machine Design

  • Ignition System

    • Distributor

    • Spark plug wires

    • Coil

  • Cooling System

    • Eleven-blade fan

    • Alternator

    • Engine tin finished in black

    • Fan shroud

  • Exhaust System

    • Heat exchangers

    • Muffler

  • Driveline Components

    • Flywheel

    • Clutch

Condition & Suitability

  • Engine was running when removed ~12 years ago

  • Stored indoors since removal

  • Ideal candidate for:

    • Period-correct 1973.5 911T restoration

    • CIS-specific vintage Porsche projects

    • Engine builders seeking an untouched 2.4L core

    • Collectors sourcing a matching-era drivetrain

The 1973.5 911T marked Porsche’s transition to Bosch CIS fuel injection, making the 911/91 engine unique in the 2.4L lineup. Its combination of a magnesium case, mechanical refinement, and CIS reliability makes it a sought-after powerplant among early G-body enthusiasts.

26 reviews for Porsche 911T Type 911/91 Engine

  1. Rated 5 out of 5

    Lucas Martin (verified owner) –

    Bought a rear differential and it runs silently after installation.Mechanic confirmed the unit was in very good condition.Delivery tracking was accurate throughout shipping.I would definitely buy again.

  2. Rated 5 out of 5

    Mohsin Sheikh (verified owner) –

    Purchased LED tail lights and visibility improved instantly.They look modern and clean on the car.No coding required after installation.Very satisfied customer.

  3. Rated 5 out of 5

    Ivan Dimitrov (verified owner) –

    Bought a water pump and cooling system works perfectly again.No leaks after installation.Part looked high quality.Very pleased with the purchase.

  4. Rated 5 out of 5

    Raissa Ivanova (verified owner) –

    Engine wiring harness solved multiple electrical faults instantly.All connectors were intact and clean.Part looked professionally inspected before shipping.Very impressed with the quality control.

  5. Rated 5 out of 5

    Sara Svensson (verified owner) –

    Ordered ignition coils and engine misfires disappeared.Idle became smooth immediately.Shipping was quick and secure.Great value for money.

  6. Rated 5 out of 5

    Blaise Kouame (verified owner) –

    Bought rear camera module and display works perfectly.Image quality is clear again.Installation was simple.Great replacement part.

  7. Rated 5 out of 5

    Sebastian Kruger (verified owner) –

    Purchased AMG pedals for interior upgrade.They look sporty and well finished.Easy installation process.Very happy with the appearance.Ordered engine covers and they arrived spotless.

  8. Rated 5 out of 5

    Nada Ibrahim (verified owner) –

    Purchased AMG badges and they look authentic.Adhesion was strong and secure.Great finishing quality.Nice cosmetic improvement.

  9. Rated 5 out of 5

    Karim Benzema (verified owner) –

    Bought wheel bearings and noise disappeared completely.Driving feels smooth and quiet now.Parts appeared brand new condition.Very satisfied with the outcome.

  10. Rated 5 out of 5

    Sandra Martins (verified owner) –

    Bought parking sensors and they function perfectly.Installation was simple plug and play.Matched paint color nicely.Very pleased with results.

  11. Rated 5 out of 5

    Oscar Jimenez (verified owner) –

    Ordered seatbelt mechanism and operation is smooth.Safety warning disappeared immediately.Quick delivery time.Excellent product quality.

  12. Rated 5 out of 5

    Adama Traore (verified owner) –

    Ordered engine mounts and vibrations disappeared completely.Driving feels comfortable again.Packaging was excellent.Reliable purchase.

  13. Rated 5 out of 5

    Beatrice Moreau (verified owner) –

    Bought a rear differential and it runs silently after installation.Mechanic confirmed the unit was in very good condition.Delivery tracking was accurate throughout shipping.I would definitely buy again.

  14. Rated 5 out of 5

    David Lopez (verified owner) –

    Bought a battery control module and charging system works fine.No dashboard errors anymore.Customer support was helpful.Excellent buying experience.

  15. Rated 5 out of 5

    Patricia Silva (verified owner) –

    Bought AMG mirrors and electronics function perfectly.Auto-fold and indicators work without issues.Condition was better than expected.Great attention to packaging detail.

  16. Rated 5 out of 5

    Grace Johnson (verified owner) –

    Ordered AMG brake lines and pedal feel improved.Installation was straightforward at my garage.Parts looked unused and clean.Great product quality.

  17. Rated 5 out of 5

    Teresa Gomez (verified owner) –

    Bought wheel bearings and noise disappeared completely.Driving feels smooth and quiet now.Parts appeared brand new condition.Very satisfied with the outcome.

  18. Rated 5 out of 5

    Nadia Benali (verified owner) –

    Ordered rear suspension arms and handling improved.Car feels stable at high speeds now.Everything arrived complete.Very satisfied with quality.

  19. Rated 5 out of 5

    Janet Williams (verified owner) –

    Purchased a camshaft sensor and engine runs smoothly now.No warning lights after install.Fast order processing.Reliable website.

  20. Rated 5 out of 5

    Fatima Al-Zahra (verified owner) –

    Bought a battery control module and charging system works fine.No dashboard errors anymore.Customer support was helpful.Excellent buying experience.

  21. Rated 5 out of 5

    Rene Fischer (verified owner) –

    Ordered rear suspension arms and handling improved.Car feels stable at high speeds now.Everything arrived complete.Very satisfied with quality.

  22. Rated 5 out of 5

    Alain Petit (verified owner) –

    Ordered side skirts and the finish exceeded expectations.Paint quality matched closely with my car color.Easy installation with original mounting points.Very pleased with this purchase.

  23. Rated 5 out of 5

    Ricardo Monteiro (verified owner) –

    Ordered radiator hoses and fitment was exact.No leaks after installation.Material quality feels durable.Good value purchase.

  24. Rated 5 out of 5

    Erik Lund (verified owner) –

    Ordered door handles and finish matched perfectly.Installation was straightforward.Parts looked brand new.Very satisfied customer.

  25. Rated 5 out of 5

    Helena Sousa (verified owner) –

    Bought rear subframe and alignment was perfect.Mechanic had no complaints installing it.Condition exceeded expectations.Highly satisfied buyer.

  26. Rated 5 out of 5

    Daniel Petrescu (verified owner) –

    Ordered engine mounts and vibrations disappeared completely.Driving feels comfortable again.Packaging was excellent.Reliable purchase.

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