PORSCHE Automatic Transmission Transaxle Torque Converter 104K LM99

( Manufacturer Part Number: 944TORQUECONVERTER ), ( Type: Torque Converter )

Review PORSCHE Automatic Transmission Transaxle Torque Converter 104k Miles fits 944

The **Porsche 944 Torque Converter Automatic Transmission Transaxle (LM99)** represents a rare and highly sought-after piece of automotive engineering, blending Porsche s legendary precision with the convenience of an automatic transmission. Originally introduced in the late 1980s as part of the **944 S2 Cabriolet** and later offered as an optional upgrade for the **944 S2 Coup **, this transaxle combines a front-wheel-drive layout with a sophisticated **three-speed automatic transmission** featuring a **torque converter**, making it one of the most unique Porsche automatic transmissions ever produced. Unlike the standard manual or the later **PDK-equipped models**, the LM99 transaxle was designed to deliver smooth, effortless shifting while maintaining the sporty character of the 944 s rear-engine architecture. The transmission itself is a refined evolution of Porsche s earlier **928 automatic** technology, incorporating a **band-and-clutch system** for precise gear engagement, paired with a **torque converter** that optimizes power delivery without sacrificing responsiveness. The transaxle s compact yet robust design integrates the transmission, differential, and torque converter into a single, self-contained unit, housed within a lightweight aluminum casing that reflects Porsche s commitment to both performance and weight efficiency. Though production numbers were limited fewer than 1,000 units were ever built the LM99 remains a coveted component among collectors and enthusiasts, offering a blend of rarity, historical significance, and functional elegance. Whether restored to its original specification or repurposed into a modern project car, this transmission stands as a testament to Porsche s willingness to innovate while staying true to its core identity as a brand that values both driving dynamics and engineering ingenuity.

### **Pros and Cons of Buying a Porsche 944 with a Torque Converter (LM99 Automatic Transmission)**

1. **Smooth and Convenient Driving** The torque converter automatic transmission eliminates the need for manual shifting, making the car more accessible for daily commuting and relaxed driving. This is particularly useful for those who prefer not to engage in frequent gear changes.

2. **Better Fuel Efficiency in Stop-and-Go Traffic** Unlike a manual transmission, the torque converter allows the engine to idle at lower RPMs when stationary or in light traffic, which can improve fuel economy in urban driving conditions compared to a manual.

3. **Reduced Driver Fatigue** For long drives or highway cruising, the automatic transmission reduces driver fatigue by handling gear shifts automatically, making the car more enjoyable for extended trips.

4. **Potential for Higher Resale Value** Some buyers prefer automatic transmissions, especially in markets where manual transmissions are less common. This could make the car more appealing to a broader audience when reselling.

5. **Better for Towing (Compared to Manual)** While the 944 was never a heavy towing machine, the torque converter allows for smoother power delivery when carrying light loads, reducing strain on the driver.

6. **Modernized Driving Experience** The LM99 automatic transmission was Porsche s first attempt at automating a 944, offering a more refined driving experience compared to the original manual models, which could be sporty but demanding.

---

1. **Reduced Performance and Engagement** The torque converter adds weight and introduces a slight delay in power delivery compared to a manual transmission. The 944 is known for its sharp, direct driving dynamics, and the automatic version sacrifices some of that responsiveness. Enthusiasts often prefer the manual for its purer driving experience.

2. **Higher Maintenance Costs** Automatic transmissions, especially in older Porsche models, tend to be more complex and expensive to maintain. The torque converter, transmission fluid, and related components (such as the converter clutch) can wear out over time and require costly repairs. Fluid changes are also more frequent than in manual transmissions.

3. **Potential for Slippage and Rough Shifting** Older automatic transmissions, including the LM99, can develop slippage in the torque converter or rough shifting over time. This is particularly common if the transmission fluid hasn t been changed regularly or if the converter clutch fails.

4. **Lower Fuel Efficiency on the Highway** While the automatic may be better in stop-and-go traffic, it often consumes more fuel at highway speeds compared to a well-tuned manual transmission. The torque converter introduces some inefficiency in power transfer.

5. **Higher Purchase Price** Automatic versions of the 944 (especially the LM99) are generally more expensive to buy than manual models, even if they are older. This is due to their rarity and the added complexity of the transmission.

6. **Limited Aftermarket Support** Manual transmissions are far more common in the classic Porsche scene, meaning there are more aftermarket parts, tuners, and performance modifications available for manual 944s. Finding parts or specialists for an automatic can be more difficult and costly.

7. **Potential for Transmission Failure** The torque converter and transmission in older Porsches are known to fail over time, especially if not properly maintained. A failed converter or transmission can be an extremely expensive repair, often costing more than the car is worth.

8. **Less "Porsche" Feel** The 944 is a driver s car, and many enthusiasts value its manual transmission for the direct connection to the road. The automatic version feels less "Porsche-like" to purists who appreciate the car s sporty heritage.

---

Buying a Porsche 944 with a torque converter automatic transmission (LM99) is a viable choice if you prioritize convenience, smoothness, and ease of driving over raw performance and driving engagement. It is ideal for those who want a more relaxed, hassle-free experience, particularly for daily commuting or casual driving. However, it is not the best option for enthusiasts who seek the full driving experience of the 944 or plan to modify the car for performance.

- Prefer not to shift gears manually.

- Want better fuel efficiency in city driving.

- Are willing to accept higher maintenance costs and potential reliability issues.

- Do not mind sacrificing some of the car s sporty character.

For those who value the 944 s driving dynamics, performance, and the classic Porsche experience, a manual transmission model remains the superior choice.

---

- **Buy the automatic (LM99) if:** You want a more relaxed, convenient driving experience and are willing to budget for potential transmission maintenance. It s a good option for someone who appreciates the 944 s styling and engineering but doesn t need the manual transmission s engagement.

- **Buy the manual if:** You are a driving enthusiast, plan to modify the car, or want the most authentic Porsche experience. The manual transmission offers better performance, lower maintenance costs, and a stronger resale appeal among collectors.

- **Consider a well-maintained example:** If you do decide on the automatic, ensure the torque converter and transmission have been regularly serviced. Look for signs of proper fluid changes and avoid models with a history of rough shifting or slippage.

- **Budget for potential repairs:** Be prepared for higher maintenance costs, especially if the transmission or converter is aging. A manual 944 is generally more cost-effective to own in the long run.

Ultimately, the choice depends on your priorities convenience versus driving enjoyment. For most Porsche enthusiasts, the manual transmission remains the gold standard, but the automatic can be a practical alternative for the right buyer.

Details:

Removed From: 1983 Porsche 944 with 126,245 miles. Works as should. Porsche 944 Automatic Transmission Transaxle Torque Converter 104k Miles LM99, This torque converter is in good condition with minor cosmetic flaws. Larsen Motors.

part #: 944torqueconverter prices

• $112.49-$699.99

specifications torquconv:

• for makes: Porsche
• mpn: 944torqueconverter
• type: Torque Converter

payments torquconv:

• credit card: Diners-club
• other
• wallet: Google-pay

offer torquconv:

• availability: In Stock
• sold: 0
• started: February 6, 2026
• quantity: 1
• best offers: True
• options: Ship-to-home

seller torquconv:

• # reviews: 7992
• city: Pomeroy, Pennsylvania
• rating: 98.2%

returns torquconv:

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

shipping torquconv:

• cost: $82.78
• transit: 5-13 Days
• class: Economy
• carrier: UPS, FedEx
• type: Calculated
• service: UPS Ground Saver, FedEx Ground Economy

general torquconv:

• Car Truck Parts Accessories > Transmission Drivetrain > Torque Converters
• condition: Used

Porsche 944TORQUECONVERTER Is Similar To:

• 14920309817 Porsche 08 Boxster 987 Transmission (37.8% similar) There is always a large stock of used motorcycles parts available, with the inventory changing daily. Free domestic shipping this part is off a good running 2008 porsche boaster used see photos for condition 11 USA: buyers pay insured to anywhere in the states. Listings may be closed early due to ...(February 17th, 2017)
• 43a280-03k05472 Porsche Cayenne Torque Converter (40.3% similar) Exact part number match is the only guarantee of fitment. Donor: - 2004 porsche cayenne paint code: M3W e4 Carmen red metallic transmission: A48. The compatibility list is for reference only. 20 engine: M02. This items is in good and full working condition. You are happy or your money back. Any ...(July 27th, 2018)
• 43a280-05f16289 Porsche 06 Cayenne Torque Converter (40.8% similar) Priority and express shipping is an option for these items. Free domestic shipping part is off a clean good running 2006 porsche cayenne with 70,381. There is always a large stock of used motorcycles parts available, with the inventory changing daily...(February 27th, 2017)
• 7222501202 Porsche Oem 05-08 911-torque (22.2% similar) Est, Mon to Fri...(April 23rd, 2017)
• 7222501302 Porsche Oem 07-09 911-torque (22.2% similar) Est, Mon to Fri...(April 23rd, 2017)
• 911 Porsche Genuine Converter 943-316-001-00 (37.1% similar) Shipping carrier substitutions may be made at our determination in an attempt to reduce cost the customer. With a wide selection, quality service and fast shipping . Electrical parts are not returnable. Parts must be resalable and in the original packaging. Should be your first call every time...(April 20th, 2017)
• 92-95 Oem Porsche 968 Tiptronic Torque (31.3% similar) Removed from 1993 porsche 968 in good condition fits all patronage model's only comes exactly as shown photos the listing are actual item for sale. Not satisfied. Please view the item carefully and decide for yourself on cosmetic condition of. Box, Guam, APO, hi. Shipping buyer pays no fee in ...(December 18th, 2016)
• 94442112100 Porsche Automatic Torque Converter Flange Drive Flex Plate (48.2% similar) We normally reply within 12 hours. Not satisfied. Removed from 1988 porsche 944 good condition comes exactly as shown all photos in the listing are actual item for sale. Please feel free to ask any specific questions regarding the item. Box, Guam, APO, hi. Please view the item carefully and decide...(July 6th, 2018)
• 955-316-001-02 Porsche Genuine Cayenne Converter (36.1% similar) Shipping carrier substitutions may be made at our determination in an attempt to reduce cost the customer. Electrical parts are not returnable. Should be your first call every time. With a wide selection, quality service and fast shipping . Parts must be resalable and in the original packaging...(April 20th, 2017)
• 955-316-001-03 Porsche Genuine Cayenne Torque (34% similar) Should be your first call every time. With a wide selection, quality service and fast shipping . Electrical parts are not returnable. Shipping carrier substitutions may be made at our determination in an attempt to reduce cost the customer. Parts must be resalable and in the original packaging. ...(April 20th, 2017)
• 955-316-001-21 Porsche Genuine Cayenne Torque (34% similar) Electrical parts are not returnable. Shipping carrier substitutions may be made at our determination in an attempt to reduce cost the customer. With a wide selection, quality service and fast shipping . Should be your first call every time. Parts must be resalable and in the original packaging...(April 19th, 2017)