PORSCHE 944CRANKSENSOR Flywheel Sensor Housing Bracket 9441013212R LM99

( Manufacturer Part Number: 944CRANKSENSOR ), ( Type: Crank Sensor )

Review PORSCHE Flywheel Sensor Bell housing Bracket Used fits 944 1983

The **Porsche 944 Crankshaft Position Sensor (CKP) Assembly for 1983 Models**, identified by the part number **9441013212R** (also referenced as **LM99**), is a critical component of the engine s ignition and timing system, ensuring precise crankshaft monitoring for optimal performance and drivability. This sensor assembly is designed to integrate seamlessly with the flywheel housing bracket, a key interface that secures the sensor in place while maintaining alignment with the flywheel s reluctor ring. Crafted for the early generation 944 (pre-1986 facelift), this sensor operates using inductive technology, detecting the passing teeth of the flywheel s reluctor ring to generate a reference signal for the engine control unit (ECU). The robust construction of the bracket ensures durability under the demanding conditions of high-performance driving, while the sensor itself is engineered to withstand the thermal and mechanical stresses of Porsche s air-cooled flat-six engine. Replacement of this sensor is often necessary when symptoms such as rough idling, misfires, check engine lights, or failure to start appear, as these issues typically stem from a faulty signal disrupting the engine s timing and fuel delivery. This genuine Porsche part guarantees compatibility with the 1983 944 s original specifications, providing reliable performance and longevity when installed correctly. Whether addressing a worn-out sensor or upgrading as part of a maintenance routine, this assembly is an essential component for preserving the integrity and responsiveness of Porsche s iconic sports car.

### **Pros and Cons of Buying a 1983 Porsche 944 Crankshaft Sensor (Part Numbers: 9441013212R, LM99, Flywheel Sensor/Bell-Housing Bracket)**

1. **Reliability and Performance** The crankshaft sensor (also known as the flywheel sensor or position sensor) is a critical component for engine management. A faulty sensor can cause misfires, poor acceleration, or even stalling. Replacing it with an OEM or high-quality aftermarket part ensures proper engine function and prevents further damage.

2. **Prevents Long-Term Damage** Ignoring a failing crank sensor can lead to catastrophic engine failure, including damage to the catalytic converter, ignition system, or even the engine itself. Replacing it early avoids costly repairs.

3. **OEM Quality (If Purchasing Original Part)** The **9441013212R** and **LM99** are genuine Porsche parts, meaning they are built to the manufacturer s specifications, ensuring a proper fit and long-term reliability.

4. **Compatibility** These sensors are designed specifically for the **944 (1982 1991)**, making them a direct replacement without modification.

5. **Aftermarket Options Available** If purchasing a non-OEM sensor (e.g., from brands like **Bosch, Denso, or OE-Motor**), you can often find high-quality alternatives at a lower cost while maintaining reliability.

6. **Easy Installation** The crank sensor is typically located near the flywheel and bell housing, making it accessible for most mechanics or experienced DIYers.

7. **Improved Driving Experience** A functioning crank sensor ensures smooth engine operation, better fuel efficiency, and smoother acceleration.

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1. **Cost (OEM Parts)** Genuine Porsche parts like the **9441013212R** can be expensive, sometimes costing **$100 $200 ** depending on availability and region. This may be prohibitive for budget-conscious buyers.

2. **Aftermarket Variability** While many aftermarket sensors are reliable, some cheaper alternatives may fail prematurely or lack proper calibration, leading to recurring issues.

3. **Potential for Counterfeit Parts** If purchasing online, there is a risk of receiving a fake or low-quality sensor, which could worsen the problem or fail quickly.

4. **Additional Labor Costs** If not installing it yourself, labor charges for replacement can add **$100 $200** to the total cost, depending on the shop.

5. **Compatibility Concerns with Modified Engines** If the 944 has been heavily modified (e.g., turbocharged, forced induction, or custom ECU tuning), a stock sensor may not perform optimally, requiring an upgraded or aftermarket sensor.

6. **Diagnostic Challenges** Some sensors (especially older ones) may require proper grounding or wiring checks. A faulty wiring harness or corroded connections can mimic sensor failure.

7. **Limited Lifespan of Some Aftermarket Sensors** While most sensors last the life of the car, some budget aftermarket units may degrade faster, requiring replacement sooner.

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The **1983 Porsche 944 crankshaft sensor (9441013212R/LM99)** is a **necessary replacement** if the original is failing, as it prevents engine damage and ensures proper operation. The **pros outweigh the cons** if you prioritize reliability and long-term performance, especially when using **OEM or high-quality aftermarket parts**.

However, the **main drawbacks** are the **cost of OEM parts** and the **potential for counterfeit or low-quality aftermarket alternatives**. If budget is a concern, **verified aftermarket sensors** (e.g., **Bosch 0 261 229 001** or **Denso CK03**) can be a cost-effective solution while maintaining reliability.

- **If possible, purchase the genuine Porsche part (9441013212R or LM99)** for the best fit and longevity, especially if the car is kept in original condition.

- **If on a budget, opt for a reputable aftermarket sensor** (e.g., **Bosch, Denso, or OE-Motor**) from a trusted supplier (e.g., **Porsche Parts Direct, RockAuto, or eBay with seller feedback**).

- **Verify wiring and connections** before installation to rule out electrical issues.

- **Consider professional installation** if unsure about handling the sensor, as improper installation can lead to further problems.

- **Check for recalls or service bulletins** related to this sensor in the 944 model year, as Porsche may have addressed common failures in later updates.

**Final Verdict:** **Worth the investment** if the sensor is confirmed faulty, as it protects the engine and maintains drivability. Prioritize **quality over cost** to avoid repeated replacements.

Details:

Works as should. Removed From: 1983 Porsche 944 with 126,245 miles. 1983 Porsche 944 Flywheel Sensor Bell-Housing Bracket Used R LM99, This crank sensor is in good condition with minor cosmetic flaws. Larsen Motors.

part #: 944cranksensor prices

• $62.99-$115.63

specifications cranshafengin:

• for makes: Porsche
• for years: 1983
• mpn: 944cranksensor
• type: Crank Sensor

returns cranshafengin:

• policy: Returns Accepted
• paid by: Buyer
• time: 60 Days

seller cranshafengin:

• # reviews: 8008
• city: Pomeroy, Pennsylvania
• rating: 98.2%

offer cranshafengin:

• quantity: 1
• sold: 0
• best offers: True
• started: February 11, 2026
• options: Ship-to-home
• availability: In Stock

general cranshafengin:

• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts
• condition: Used

payments cranshafengin:

• wallet: Apple-pay
• credit card: Discover
• other

shipping cranshafengin:

• type: Calculated
• cost: $25.56
• transit: 6-13 Days
• service: UPS Ground Saver, FedEx Ground Economy
• carrier: UPS, FedEx
• class: Economy

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