Rebuilt German Worm & Roller Steering Box | Porsche 356 Pre-A/356A & Pre-1961 VW Beetle & Ghia
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Porsche 356 & VW Type 1 Steering Box — Rebuilt Genuine German Worm & Roller Gearbox
This is the correct early worm-and-roller steering box for the Porsche 356 — the very same VW-designed gearbox Porsche fitted to its earliest cars before the switch to ZF. Porsche built the first 356 on Volkswagen underpinnings, and the 356 Pre-A and 356A (up to September 1957) used this VW-type steering box. If you are restoring a genuine 356, or building a 356 Speedster or 550 Spyder replica on a VW-based front beam, this is the period-correct, drive-it-anywhere unit that gives back the crisp, connected steering feel these cars are famous for.
Every box is a professionally rebuilt, genuine German casting — not a vague, stiff overseas reproduction. We strip each unit to the core and remachine it to factory specification, eliminating decades of wear, "dead spots," and on-center slop so your Porsche or Volkswagen tracks straight and turns in precisely.
Vehicle Fitment
- Porsche 356 "Pre-A" (1948–1955): 356/1100, 1300, 1500, 1500 S Coupe, Cabriolet, Speedster — original VW-type worm & roller box.
- Porsche 356 A (1955–9/1957): 1600 / 1600 S Coupe, Cabriolet, Speedster — correct through the ZF changeover (approx. Sept 1957).
- Porsche 356 Speedster & 550 Spyder Replicas (all years): On a VW-based front beam — direct bolt-in, same worm-gear apparatus.
- VW Type 1 Beetle (1950–1960): Sedan & Cabriolet — early "large" output shaft, swing-axle / link-pin.
- VW Karmann Ghia (1955–1960): Pre-1961 application.
Note for genuine-Porsche owners: late 356 A (after ~9/1957), 356 B and 356 C cars used a ZF worm-and-peg box and are not the application for this unit. If you are matching a numbers-correct car, confirm your drop-arm spline and mounting before ordering — we're happy to help you verify fitment.
Why Choose This Steering Box?
It is built on an authentic German casting bearing the original VW "VW" and "D" foundry markings — essential for period-correct 356 and Type 1 restorations — and rebuilt to a rigorous standard rather than replaced with a stiff reproduction.
The Rebuild Process
- Precision Machining: Input and sector shafts are polished and lathe-machined; the worm gear is lathe-machined to remove all pitting for a glass-smooth interface with the roller/peg.
- Internal Component Refresh: All internal bearings and cups are replaced with premium new components for frictionless rotation.
- Housing Restoration: The original German casting is sand-blasted to bare metal, then finished in a durable, period-correct coating.
- Leak-Proof Engineering: New seals on both the input and sector shafts, plus a new sector shaft bushing to eliminate lateral "slop."
- High-Pressure Lubrication: Hand-assembled and filled with 00 Grease (Corn Header Grease), which clings to the gears under pressure.
- Bench-Tested Calibration: Each box is adjusted to factory specification on the bench, indexed with zero play on center.
Key Features & Benefits
- Authentic German Casting: Original VW "VW" and "D" markings — period-correct for Porsche 356 and VW restorations.
- Correct Early Design: Worm-and-roller architecture used by Porsche 356 Pre-A / 356A and pre-1961 VW Type 1 (swing-axle / link-pin).
- Zero-Play Center: Expertly shimmed and adjusted for a crisp, on-center feel.
- Installation Ready: Pre-filled with lubricant and includes the sector shaft adjustment hardware, ready to bolt in.
Technical Specifications
- Type: Worm-and-roller steering box
- Casting: Genuine German, original VW "VW" and "D" foundry markings
- Condition: Professionally rebuilt to factory specification
- Lubricant: Pre-filled with 00 Grease (Corn Header Grease)
- Included: Sector shaft adjustment hardware
Frequently Asked Questions
- Does this steering box fit a Porsche 356? Yes. It is the correct VW-type worm-and-roller steering box used on the Porsche 356 Pre-A and 356 A up to approximately September 1957, and it bolts directly into VW-based 356 Speedster and 550 Spyder replicas.
- Is the Porsche 356 steering box the same as a VW steering box? On the early cars, yes. Porsche sourced this worm-and-roller gearbox from Volkswagen for the Pre-A and early 356 A, so the same rebuilt German unit serves both marques. Porsche later moved to a ZF worm-and-peg box on the 356 B and 356 C.
- Which VW models does it fit? Pre-1961 VW Type 1 Beetle (sedan and cabriolet) and Karmann Ghia with the early large-output-shaft, swing-axle / link-pin front end.
- Is it rebuilt or new? It is a genuine German box, professionally rebuilt to factory specification — remachined worm gear, new bearings, seals and sector-shaft bushing, bench-tested for zero play, and pre-filled with 00 grease ready to install.