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Engine Tuning
(price is each).
Porsche reference no: 94437504504.

Fits:
Porsche 944 / S / S2 / Turbo 1985-91
Perfect solution for those of you looking to replace your worn transmission mount with something a bit sportier and more reliable. Equipped with 8 polyurethane bushes.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3609309441
The product you are viewing cross references to these numbers
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
With many of the same additives our winning race fuel possesses, Torco Accelerator is a blend of components which will transform the make up of premium pump gas to closely resemble race fuel.
Torco accelerator will lower the end burn temperature which will make fuel burn more complete thus releasing all of the power that your engine has to offer. Efficiency equals horsepower! All this while raising the octane of your fuel. Un-chain yourself from the drum!
Mix a 32oz (945ml) can of Torco Accelerator to 10 gallons of 91 Premium Unleaded to make an efficient 102 Octane race fuel, mix with 5 gallons of Premium Unleaded to make whopping 105 Octane.
Accelerator is unleaded, so it won't harm sensitive O2 sensors or catalytic converters.
OFFROAD USE ONLY

Can be adapted to various vehicles.
Filter height: 6 inch / 15cm
Filter diameter at base: 7 inch / 18cm
Funnel height: 8 inch / 20cm
Filter diameter at base: 3,5 inch / 9cm
Overall height: 13inch / 33cm

Fits:
Porsche 944 2.5 8v 1988-89
Suitable to use with Nikasil liners.
Specification
Technical information is sourced from Wössner's latest catalogue:
Part Number: K9476
Engine Type: - M44.09, M44.10,
OE Bore Size: 100.00mm
Bore Sizes Available:
- 100.00mm - 2478.71cc, Compression Ratio: 10.6:1
- 100.50mm - 2503.56cc, Compression Ratio: 10.7:1
- 101.00mm -2528.54cc, Compression Ratio: 10.79:1
Bore Size 100.00mm
Piston Size: 99.92mm
Over Size: 0mm
Displacement CC: 2478cc
Dome / Bowl Volume: -0.5cc
Wössner Comp Ratio: 10.6:1
Ring Part Number: 1000XPY
Bore Size 100.50mm
Piston Size: 100.42mm
Over Size: 0.5mm
Displacement CC: 2503cc
Dome / Bowl Volume: -0.5cc
Wössner Comp Ratio: 10.7:1
Ring Part Number: 1005XPY
Bore Size 101.00mm
Piston Size: 100.92mm
Over Size: 1mm
Displacement CC: 2528cc
Dome / Bowl Volume: -0.5cc
Wössner Comp Ratio: 10.79:1
Ring Part Number: 1010XPY
Standard
Stroke: 78.9mm
Dome/Bowl Volume: -
OE Comp. Ratio: 10.2:1
Comp. Height: 40.8mm
Valves Per Cylinder: 2
Cylinders: 4
Please CLICK HERE for Technical release – Piston / Con rod
orientation.
Wössner are regarded by Europe's leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress's of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots" on piston crowns. Price includes all piston rings and gudgeon pins.
Price shown is for complete engine set.
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
Porsche Engine Tuning & Performance Parts
At Design911, we offer one of the widest selections of Porsche performance and tuning parts available online. Whether you’re chasing more horsepower, sharper throttle response, or a sportier exhaust note, our catalogue includes everything from ECU remapping equipment and electronic throttle bodies to air induction kits, turbochargers, exhaust packages, and supercharger kits.
We source only the highest quality performance parts from leading global manufacturers, delivering worldwide from our UK base. From classic air-cooled icons to the latest turbocharged models, we have performance upgrades tailored to your Porsche.
What Porsche Performance Parts Do We Offer?
Our range covers every area of engine tuning and
performance:
- ECU
Remapping Equipment – unlock hidden power and refine engine management
- Electronic
Throttle Bodies – faster response and smoother power delivery
- Air
Induction Kits – improve airflow for extra performance and a sportier
engine sound
- Turbochargers
& Superchargers – serious horsepower upgrades with proven
reliability
- Exhaust
Packages – enhance performance and unleash the true Porsche sound
- Safety Upgrades – fire extinguisher mounts and track-ready accessories
Our website makes it easy to filter results by Porsche model and year, ensuring you only see parts that fit your car.
Why Maintain Performance Parts?
Like all engine components, performance parts need regular
inspection:
- Visual
checks every few months for signs of wear, damage, or leaks
- Listen for changes in exhaust tone, turbo sounds, or throttle response — unusual noises can indicate the need for servicing or replacement
Catching issues early prevents failures on the road and ensures your Porsche always delivers its best performance.
Benefits of Porsche Performance Parts
- Increased
Horsepower & Torque – induction kits, turbo upgrades, and ECU
remaps combine to deliver noticeable gains
- Improved
Throttle Response – quicker reaction and sharper acceleration
- Enhanced
Sound – sport exhausts transform your Porsche’s character with a
motorsport-inspired tone
- Track-Day
Ready Safety – from kill switches to fire extinguisher mounts, safety
parts protect both driver and car
- Driving Enjoyment – tuning parts don’t just add numbers; they make your Porsche more engaging, responsive, and thrilling to drive
Why Choose Design911 for Porsche Tuning?
- Massive
Range – from small upgrades to full turbo kits
- Top
Brands – trusted global manufacturers and Porsche-specific specialists
- OEM
& Performance Options – choose between factory upgrades or
high-output tuning parts
- Worldwide
Delivery – fast, secure shipping from our UK warehouse
- Expert Advice – our team can help you select the best parts for your goals
Explore our Porsche Engine Tuning range today – from ECU remaps to complete turbocharger kits – and unlock the true performance potential of your Porsche.