PORSCHE 9961012R Crankshaft Carrier 2.5L M96-20

( Manufacturer Part Number: 9961012R ), ( Non-domestic Product: No ), ( Brand Type: Genuine Oem ), ( Fitment Type: Direct Replacement ), ( Items Included: Carrier ), ( Type: Crankshaft ), ( Year: 1998 ), ( Manufacturer Warranty: 1 Month ), ( Country Of Origin: Germany )

Review PORSCHE 2.5l Crankshaft And Carrier Oem fits BOXSTER 1997–1999

The **Porsche 996 1012R (1997 1999) Boxster 2.5L M96-20 Crankshaft Carrier** is a precision-engineered component designed exclusively for the iconic 996 generation of Porsche s roadster, specifically tailored to models equipped with the **M96-20 2.5-liter flat-six engine** produced between 1997 and 1999. This crankshaft carrier is a critical part of the engine s lower end assembly, serving as the foundational support for the crankshaft and connecting rod bearings while ensuring optimal alignment and load distribution during operation. Crafted from high-grade **forged steel** and machined to Porsche s exacting specifications, this component is engineered to withstand the extreme stresses of high-performance driving, including aggressive acceleration, high RPMs, and the dynamic forces inherent to the Boxster s rear-wheel-drive layout. The **1012R designation** indicates its compatibility with the **996 Boxster S (986) and standard Boxster (987) models**, though it is particularly sought after by enthusiasts restoring or upgrading their 2.5L M96 engines, as it is a common wear item prone to failure due to fatigue or improper maintenance. Replacing a worn or damaged crankshaft carrier is essential for maintaining engine integrity, preventing catastrophic failure, and preserving the Boxster s legendary driving dynamics. Whether used in a restoration project, a performance modification, or as a proactive replacement for an aging engine, this part ensures reliability, durability, and the unmistakable character of the M96 s naturally aspirated power delivery. For owners and mechanics alike, sourcing an **OEM-quality or high-re reproduction** of this component is a critical step in preserving the soul of the 996 Boxster while adhering to Porsche s engineering standards.

### **Pros and Cons of Buying a 1997 1999 Porsche Boxster (996, 2.5L, M96-20 Crankshaft Carrier)**

#### **Pros**

1. **Classic Boxster Design**

- The 996 Boxster introduced a fresh, modernized look compared to the 964, with a more angular, sporty aesthetic. The 2.5L M96 engine (especially the later M96-20) refined the driving experience with better power delivery and smoother operation than the earlier 2.7L models.

2. **Strong Engine (M96-20, 1998 1999)**

- The **M96-20** (used in 1998 1999 models) features a **20-valve head**, improved cylinder heads, and a **crankshaft carrier** (a key upgrade over the earlier M96-10). This engine produces **around 204 225 hp** (depending on tuning and region) and offers better mid-range torque than the 964.

- The **2.5L displacement** is more efficient than the 2.7L, with better fuel economy and lower emissions compliance (important for modern registration in some regions).

- The **water-cooled turbocharged flat-six** (in later models) provides a more linear powerband than the naturally aspirated 964, making it more engaging to drive.

3. **Reliability Improvements Over 964**

- The **996 generation** benefited from Porsche s learning curve, with fewer early-life issues compared to the 964. The **M96-20** is generally more robust than the M96-10, with better sealing and less risk of oil leaks.

- The **crankshaft carrier** (a reinforced component) reduces the risk of catastrophic engine failure, a known issue in some early 964s.

- The **transmission (ZF 5HP19)** is more refined than the 964 s Getrag unit, with smoother shifts and better durability.

4. **Modern Features for Its Time**

- **Electric windows, power steering, and air conditioning** (standard in later models) make it more comfortable than the 964.

- **Better sound insulation** reduces wind and road noise compared to the 964.

- **Improved handling** with stiffer suspension and better brake calipers (especially in later models).

5. **Aftermarket & Tuning Potential**

- The **M96-20** responds well to **turbo upgrades, intake/exhaust mods, and ECU tuning**, making it a popular choice for enthusiasts.

- **Common mods** include **turbo upgrades (Garrett T25/T28), cold air intakes, and exhaust systems**, which can push power to **300 hp** with relative ease.

- **Stock reliability** is decent if maintained, but it s not bulletproof regular maintenance is a must.

6. **Collectibility & Nostalgia Factor**

- The **996 Boxster** is a transitional model, bridging the gap between the 964 s retro charm and the 986 s modern refinement. It holds appeal for those who want a **modern classic** without the extreme rarity of a 964.

- **Lower prices than 964s** (in many cases) make it accessible for first-time Porsche owners.

---

#### **Cons**

1. **Common Reliability Issues (If Neglected)**

- **Oil leaks** (valve cover, oil filter housing gasket, rear main seal) are **not uncommon**, especially if the car hasn t been maintained properly. The **M96-20 is more reliable than the M96-10**, but it s not immune.

- **Turbocharger failures** (if forced or not serviced) can be expensive. The **Garrett T25/T28** is durable but requires **regular oil changes and turbo servicing**.

- **Water pump failures** (especially in early 996s) can lead to **overheating and engine damage** if not caught early.

- **Transmission issues** (slipping gears, delayed shifts) can occur if the **valve body or solenoids** wear out common in high-mileage examples.

2. **Electrical Gremlins**

- **Intermittent sensor failures** (camshaft, crankshaft, MAF sensor).

- **Faulty window regulators** (common in early models).

- **Check engine lights** (often due to **O2 sensor failures, vacuum leaks, or loose wiring**).

- **Diagnostic trouble codes (DTCs)** are frequent and can be costly to fix if not addressed promptly.

3. **Suspension & Wear Items**

- **Control arms, bushings, and sway bars** wear out over time, leading to **excessive wheel movement and poor handling**.

- **Brake pads and rotors** (especially rear) can wear quickly if the car is driven aggressively.

- **Shocks and struts** (if not replaced) can become **soft and bottom out**, reducing ride quality.

4. **Maintenance Costs**

- **Oil changes every 5,000 7,500 miles** (synthetic oil recommended).

- **Turbo servicing every 50,000 75,000 miles** (if forced).

- **Suspension and bushings** need replacement every **50,000 80,000 miles**.

- **Brakes** (front and rear) should be checked every **20,000 30,000 miles**.

- **Labor costs** can add up, especially in areas with high mechanic rates.

5. **Rust & Bodywork Concerns**

- **Early 996s (1997 1998)** had **rust issues** in the **wheel arches, sills, and rear quarter panels**, especially in snowy or salted regions.

- **Pop-off panels** (common in early models) can **rust through** if not sealed properly.

- **Paint quality** varies some cars have **poor fill or chipping** due to cheap materials.

6. **Driving Experience Limitations**

- **Stock power delivery** (even with the M96-20) is **less exciting than a tuned 964 or a modern Boxster**.

- **Turbo lag** (if stock) can be noticeable, though **aftermarket turbos** eliminate this.

- **Gear ratios** (especially in early models) can feel **tall for spirited driving**, making the car feel **less engaging at low speeds**.

7. **Resale Value & Market Saturation**

- The **996 Boxster is not a high-value collector s car** like the 964 or 986. While it holds its own, **prices are more stable than rare models**.

- **High mileage examples** (over 100,000 miles) can be **hard to sell** unless they are **well-documented and maintained**.

---

### **Conclusion & Recommendation**

#### **Who Should Buy a 1997 1999 Porsche Boxster (M96-20)?**

**Enthusiasts who want a modern classic** with **better reliability than a 964** but **more character than a 986**.

**Those who plan to invest in tuning** (turbo upgrades, ECU tuning) to **unlock its full potential**.

**Owners who enjoy classic Porsche ownership** but **don t want extreme rarity or high maintenance costs**.

**Buyers who prioritize driving fun** and are **willing to maintain it properly**.

#### **Who Should Avoid It?**

**Those who want a plug-and-play, low-maintenance car** this Boxster **requires regular upkeep**.

**Buyers who dislike electrical issues** the 996 has **more gremlins than a 986 or 997**.

**People who want a high-value collector s car** it s **not as desirable as a 964 or 986**.

**Those who don t plan to modify it** stock power is **adequate but not thrilling**.

- **If you find a well-maintained example (under 80,000 miles, full service history, no major leaks, good brakes/suspension), it s a great purchase.**

- **Budget for at least $10,000 $15,000** (depending on region and condition) to account for **immediate repairs (oil leaks, brakes, suspension, electrical fixes).**

- **No oil leaks (valve cover, oil filter housing, rear

Details:

1997 1998 1999 PORSCHE BOXSTER 2.5L M96-20 - CRANKSHAFT AND CARRIER, CASE, GRIDLE, OEM 97-99 USED IN GOOD WORKING CONDITION.

part #: 9961012r prices

• $242.99-$300.00

specifications cylinderheapar:

• for models: Boxster
• for makes: Porsche
• for years: 1997-1999
• mpn: 9961012r
• non-domestic product: No
• brand type: Genuine Oem
• fitment type: Direct Replacement
• items included: Carrier
• type: Crankshaft
• year: 1998
• manufacturer warranty: 1 Month
• country of origin: Germany

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

offer cylinderheapar:

• best offers: True
• started: February 22, 2026
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• sold: 0

shipping cylinderheapar:

• service: USPS Ground Advantage
• cost: $90.00
• class: Standard
• carrier: USPS
• type: Fixed
• transit: 5-12 Days

returns cylinderheapar:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

payments cylinderheapar:

• credit card: Visa
• wallet: Google-pay
• other

seller cylinderheapar:

• rating: 0.0%
• # reviews: 84
• city: North Miami Beach, Florida

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