1. Automatic Transmissions Products
  2. sku: 23345442394570773
  3. PORSCHE 993-561-046-03-70B

PORSCHE 993-561-046-03-70B Transmission

fits make: Porsche. year: 1989–1998.

993-561-046-03-70b Porsche Genuine Transmission

( Manufacturer Part Number: 993-561-046-03-70B ), ( Part Type: Transmission ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Year: 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 ), ( Parts Included: Only Part Reference 1 On The Diagram Is Included ), ( Replaces Part Number: 9935610460170b, 9935610460270b )

Review PORSCHE Genuine Transmission fits 1989–1998

The **Porsche 993-561-046-03-70B transmission** is a meticulously engineered, high-performance manual transmission unit designed exclusively for the iconic **Porsche 993 generation (993.02) 911 models**, specifically those equipped with the **9A0 or 9A1 3.6L flat-six engine** a hallmark of the mid-1990s to early 2000s era. This transmission, identified by its unique **70B** variant, is a refined evolution of Porsche s legendary **993-era Getrag GS60-561** gearbox, optimized for the **911 Carrera, Carrera S, and Targa models** with the **9A0/9A1 powertrain**. Crafted from premium materials and precision-machined components, this transmission delivers seamless shifting, exceptional durability, and the signature Porsche driving dynamics that enthusiasts crave.

The **993-561-046-03-70B** features a **five-speed manual layout**, including a **reverse gear with a dedicated reverse synchronizer**, ensuring smooth engagement even under heavy load a critical feature for the 911 s spirited driving character. The gearbox is built around a **helical cut gear design**, which minimizes noise and wear while maximizing efficiency, allowing the engine s potent output to be transferred cleanly to the rear wheels. The **70B variant** is particularly notable for its **enhanced clutch system**, often incorporating a **multi-plate diaphragm spring clutch** with a **130mm bore**, designed to handle the torque demands of the 9A0/9A1 engine without slipping, even under aggressive driving conditions.

One of the most distinctive aspects of this transmission is its **integrated shift linkage**, which includes a **direct cable or rod linkage system** (depending on the model variant) that ensures crisp, precise shifting an essential trait for the 911 s sporty handling. The **993 transmission case** itself is forged from **high-strength aluminum**, providing a robust yet lightweight structure that contributes to the car s overall performance. Additionally, the **70B designation** often indicates a **modified or upgraded version** of the standard 993 transmission, potentially featuring **reinforced bearings, upgraded synchronizers, or a revised oil pump** for improved longevity and performance, particularly in high-performance applications.

For restoration or performance enthusiasts, this transmission is a **must-have component** when rebuilding or upgrading a **993 911**, as it ensures compatibility with the original drivetrain while offering the reliability and responsiveness expected from Porsche s engineering legacy. Whether paired with a **stock 9A0/9A1 engine** or a **modified high-performance version**, the **993-561-046-03-70B** delivers the perfect balance of **precision, durability, and driving enjoyment** a true testament to Porsche s commitment to excellence in automotive craftsmanship.

### **Pros and Cons of Buying a Porsche 993 with Transmission Part Number 561-046-03-70B**

#### **Pros**

1. **Reliability and Durability** The 993 model (1995 1998) features Porsche s proven **911 PDK predecessor**, a **Getrag GS60-50 manual transmission** (with a **5-speed manual gearbox** and **twin-plate clutch**). This transmission is robust, built to handle high torque, and designed for performance driving. Many 993s with this transmission have lasted well over 100,000 miles with proper maintenance.

2. **Classic Porsche Driving Experience** The manual transmission enhances the **engaging, driver-focused** nature of the 911, making it ideal for enthusiasts who prefer direct control over gear shifts. The clutch is strong enough for spirited driving, though it may require occasional adjustments.

3. **Aftermarket Support** The 993 platform has a **large aftermarket community**, meaning parts (including clutches, synchronizers, and seals) are widely available. Rebuilding the transmission is a common and well-documented process, with many mechanics specializing in Porsche manual transmissions.

4. **Lower Cost of Ownership (Compared to PDK or PDK-equipped Models)** Without the complexity of a modern PDK or dual-clutch system, maintenance costs are lower. A manual transmission requires less frequent servicing than a PDK, though clutch replacements can be expensive ( $1,500 $2,500 installed).

5. **Historical Significance** The 993 is a **cult classic**, and a well-maintained manual transmission model retains strong collector value. Many buyers appreciate the **nostalgic, unmodified** nature of these cars.

6. **Ease of Maintenance** Unlike modern transmissions, the 993 s manual gearbox is **relatively simple to work on**. Basic services (oil changes, clutch adjustments) can be done by experienced DIYers, reducing long-term costs.

7. **Compatibility with Performance Mods** The transmission is well-suited for **turbocharged or supercharged builds** (common in 993s), as it was designed for high-performance applications. Many owners successfully run **forced induction** without transmission issues if properly maintained.

---

#### **Cons**

1. **Clutch Wear Over Time** The **twin-plate clutch** in the 993 is strong but **not indestructible**. In high-mileage or aggressive-driving examples, the clutch may need replacement every **50,000 80,000 miles**, depending on driving habits. A worn clutch can lead to **slippage, grinding, or complete failure**.

2. **Synchronizer Wear** The **5-speed manual gearbox** relies on **synchronizers** to prevent grinding when shifting. Over time, these can wear out, making shifts **rough or impossible** in certain gears. Replacing synchronizers ( $500 $1,200) is a common but costly repair.

3. **Limited Modern Tech** Unlike newer Porsche transmissions, the 993 s manual gearbox lacks **adaptive shift programming, launch control, or electronic clutch engagement**. This means **manual effort is required for smooth shifts**, which some drivers find less convenient than modern dual-clutch systems.

4. **Rebuild Complexity** While simpler than a PDK, a **full transmission rebuild** (including clutch, synchronizers, bearings, and seals) is **labor-intensive and expensive** ( $2,500 $4,000). Many owners opt for **partial rebuilds** (just clutch or synchronizers) to save costs.

5. **Potential for Internal Damage** If the transmission is **neglected** (low fluid, lack of maintenance), internal components like **bearings, shafts, or gears** can fail, leading to **expensive repairs**. Always check for **leaks, unusual noises, or delayed engagement** before purchasing.

6. **Less Common in Newer Models** Porsche has **phased out manual transmissions** in favor of PDK in modern 911s. This means **fewer mechanics specialize in 993 manual transmissions**, which can make repairs slightly harder to find.

7. **Not Ideal for Daily Driving** The **clutch engagement point** can be **fussy** in stop-and-go traffic, and the **heavy clutch pedal** may be uncomfortable for some drivers. If the car is used frequently in city driving, clutch wear will accelerate.

---

### **Ending Conclusion**

The **Porsche 993 with the 561-046-03-70B transmission** is a **great choice for enthusiasts** who prioritize **driving enjoyment, reliability, and classic Porsche character**. It offers a **direct, engaging manual driving experience** that modern transmissions cannot replicate. However, it requires **more maintenance attention** than a PDK-equipped car, particularly in terms of **clutch and synchronizer care**.

If you **drive primarily on the road, enjoy manual shifting, and are willing to invest in maintenance**, this transmission is an excellent and **cost-effective** option. If you **prefer low-maintenance, high-tech driving**, a **PDK-equipped 996 or newer 997 911** may be more suitable.

---

### **Recommendation**

**Buy the 993 with this transmission if:**

You **love manual transmissions** and want an **authentic Porsche experience**.

You **drive mostly on the road** (not just city stop-and-go).

You **plan to maintain it properly** (regular clutch adjustments, fluid changes, and rebuilds as needed).

You **appreciate classic cars** and don t mind occasional repairs for the sake of ownership.

You **find a well-documented example** with **service records** showing clutch and transmission care.

**Avoid or be cautious if:**

You **prefer modern convenience** (easy shifts, launch control, low maintenance).

You **plan to use it daily in heavy traffic** (clutch wear will be faster).

The **transmission has a history of neglect** (check for leaks, grinding gears, or delayed engagement).

You **aren t prepared for clutch or synchronizer replacements** in the next 50,000 80,000 miles.

**Final Verdict:**

For the right buyer someone who **values driving dynamics over modern convenience** the **993 manual transmission is a fantastic choice**. Just **expect to maintain it properly** and **budget for clutch/synchronizer replacements** when needed. If you re willing to put in the effort, it will reward you with ** decades of reliable, thrilling performance**.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Electrical parts are not returnable. Parts must be resalable and in the original packaging. Product Genuine Porsche Transmission 993-561-046-03-70B.

part #: 9935610460370b prices

  • $600.00-$1800.00

specifications autotransmissionsgo:

  • for makes: Porsche
  • for years: 1989-1998
  • mpn: 993-561-046-03-70b
  • part type: Transmission
  • genuine oem: Yes
  • manufacturer warranty: 1 Year
  • fitment type: Direct Replacement
  • year: 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998
  • parts included: Only Part Reference 1 On The Diagram Is Included
  • replaces part number: 9935610460170b, 9935610460270b

shipping autotransmissionsgo:

  • transit: 4-8 Days
  • service: Standard, Expedited, Overnight
  • class: Standard, Expedited, One-day
  • type: Fixed
  • cost: $21.98

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  • policy: Returns Accepted
  • time: 30 Days

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offer autotransmissionsgo:

  • started: March 31, 2026
  • options: Ship-to-home
  • quantity: 1
  • availability: In Stock
  • sold: 0

general autotransmissionsgo:

  • condition: New
  • Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission

seller autotransmissionsgo:

  • city: Lincolnwood, Illinois
  • rating: 99.3%
  • # reviews: 707
for makes: porsche, for years: 1989-1998, part type: transmission, genuine oem: yes, manufacturer warranty: 1 year, fitment type: direct replacement, year: 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998, parts included: only part reference 1 on the diagram is included, replaces part number: 9935610460170b, 9935610460270b,
manufacturer: porsche, category: auto parts > car truck parts accessories > transmission drivetrain > automatic transmission, sku: 23345442394570773,
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