If you own a Porsche 993 and are looking to upgrade or replace the suspension, the term "ROW M030" frequently comes up. ROW stands for Rest of World (i.e., non-US market), and M030 is Porsche's factory sport suspension option. The springs in this setup are different from standard US-market 993 springs, offering a lower ride height and stiffer rates. Finding the correct part number for those springs is essential whether you are restoring a car to factory specs or sourcing parts for a build.
This guide covers the official Porsche part numbers for 993 ROW M030 springs, how to distinguish them from other variants, and what to consider when buying new or used.
What Is Porsche M030 Suspension?
The M030 option was a factory sport suspension available on the 993 generation (1994–1998). It includes stiffer springs, thicker anti-roll bars, and firmer dampers. The result is a lower ride height (about 20mm lower than standard) and sharper handling. Many enthusiasts consider M030 the ideal balance between street comfort and track capability.
For 993 models, there are two main variations: US-market M030 (often called "US M030") and ROW M030. The ROW version uses different spring rates and part numbers because European roads and driving styles differ from American ones. The ROW springs are typically slightly stiffer and lower.
Porsche 993 ROW M030 Spring Part Numbers
The factory part numbers for ROW M030 springs depend on whether they are for the front or rear, and also on whether the car is a C2 (rear-wheel drive) or C4 (all-wheel drive). Below are the correct OEM part numbers.
Front Springs
- 993 343 531 00 – Left front spring, ROW M030 (used on C2 and C4)
- 993 343 532 00 – Right front spring, ROW M030 (used on C2 and C4)
These two springs are side-specific and must be installed on the correct side. The left and right springs have different part numbers because of slight differences in spring rate or internal clearance.
Rear Springs
- 993 333 527 00 – Rear springs for ROW M030 on C2 (911 Carrera 2)
- 993 333 528 00 – Rear springs for ROW M030 on C4 (911 Carrera 4)
Note that the rear springs differ between C2 and C4 models because the all-wheel-drive system adds weight and changes the suspension geometry. Do not mix them.
Color Coding
Porsche marks springs with paint daubs or stripes to indicate rate and application. For ROW M030, front springs typically have a green and white paint mark. Rear springs may have purple or blue marks depending on the specific variant. However, relying on color codes alone is risky because paints can fade or be misapplied; always cross-reference with the part number stamped on the spring.
How to Verify You Have the Correct Springs
If you are buying used springs, check for a stamped part number on the coil. The numbers listed above should be clearly visible. Also measure free length and wire diameter:
- Front ROW M030 springs: free length approx. 285 mm, wire diameter 11.75 mm
- Rear ROW M030 springs (C2): free length approx. 255 mm, wire diameter 12.0 mm
- Rear ROW M030 springs (C4): free length approx. 247 mm, wire diameter 12.75 mm
These measurements are approximate; variations exist due to manufacturing tolerances. Always confirm part numbers if possible.
Differences Between ROW M030 and US M030 Springs
US-market M030 springs have different part numbers:
- Front US M030: 993 343 531 01 (left) and 993 343 532 01 (right)
- Rear US M030: 993 333 527 01 (C2) and 993 333 528 01 (C4)
The US springs are slightly taller (softer) than ROW springs, resulting in a higher ride height and less aggressive handling. If you are building a track-oriented car, ROW M030 springs are the better choice. For street driving on rough roads, US M030 may be more comfortable.
Where to Buy OEM 993 ROW M030 Springs
These springs are discontinued from Porsche, but you can still find them through specialized Porsche parts suppliers (e.g., Pelican Parts, Suncoast Parts, or local Porsche dealerships with old stock). Expect to pay between $200 and $400 per spring if new old stock. Used springs are common on forums like Rennlist or Pelican Parts classifieds. Typical used prices: $50–$150 per spring depending on condition.
Be cautious with used springs: check for cracks, rust pitting, or sagging. A spring that has been compressed for 20 years may have lost some tension. If you are restoring a car to factory specs, new springs are preferable.
Alternatives to OEM ROW M030 Springs
If you cannot find OEM springs, consider aftermarket options that match the ROW M030 rates. Reputable brands include:
- H&R – Offers a spring set that replicates ROW M030 specs (part number 29344-1 for 993 C2, 29344-2 for C4)
- Eibach – Pro-Kit springs provide a similar drop and feel (part number 10-80-001-01-22 for C2, 10-80-001-02-22 for C4)
- Moog – Makes budget-friendly coil springs, but they may not match exactly. Verify specifications.
Aftermarket springs are often cheaper and easier to find, but they may alter the ride character slightly. If you want exact factory feel, go with OEM.
Installation Considerations
Installing springs on a 993 requires spring compressors and basic mechanical skills. The front struts and rear shocks must be removed to swap springs. After installation, an alignment is mandatory. The lower ride height may cause the rear toe to go out of spec, so adjustable toe links may be needed. Budget for an alignment (around $150–$300) and possibly new shock absorbers if yours are worn.
Recommended Setup for Daily Driving
For a street-driven 993, ROW M030 springs paired with Bilstein HD dampers is a common and proven combination. The springs provide a firm but compliant ride, and the dampers control rebound well. If you track the car occasionally, this setup works fine. For serious track use, consider coilover kits for better adjustability.
Final Recommendation
If you need the correct Porsche 993 ROW M030 spring part number, use the numbers listed above: front left 993.343.531.00, front right 993.343.532.00, rear C2 993.333.527.00, rear C4 993.333.528.00. Verify by stamping and measurements. For a budget-friendly alternative, consider H&R or Eibach springs that replicate the ROW M030 rates. Always replace springs in pairs (front or rear) to maintain balanced handling. Drive safe.