Starter, 12 Volt for Type 1 VW, Bosch Brand

OVERVIEW

When it comes to the heart of your air-cooled Volkswagen''s electrical system, settling for anything less than Bosch quality is a gamble you simply do not want to take. This brand-new 12-volt Bosch starter, part number SR15NP, represents the gold standard in starting technology for the Type 1 engine platform. Unlike generic offshore imitations that often struggle with heat soak or internal component fatigue after just a few hundred heat cycles, this premium Bosch unit is precision-engineered to deliver high-torque cranking power every single time you turn the key. Whether you are maintaining a bone-stock 1600cc daily driver or a high-compression performance build for a weekend sand rail, this starter provides the reliable engagement and swift rotation necessary to fire up your flat-four in any weather condition or climate.

The "NP" designation signifies that this is a brand-new production unit, meaning there is no core charge required and no need to ship your old, greasy starter back to us. It features a heavy-duty solenoid, precision-wound armatures, and high-quality brushes designed specifically to withstand the intense vibrations and thermal stress common in the air-cooled engine compartment. Investing in a genuine Bosch starter is about more than just a part; it is about the peace of mind that comes from knowing your Beetle, Karmann Ghia, or Thing will not leave you stranded. With its exact OEM fitment and superior internal construction, this 12-volt starter is the ultimate upgrade for any VW enthusiast who demands uncompromising reliability and factory-level performance for their classic restoration or custom build.

FITMENT

• Volkswagen Beetle: 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977
• Volkswagen Super Beetle: 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979
• Volkswagen Karmann Ghia: 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974
• Volkswagen Thing (Type 181): 1973, 1974
• Volkswagen Bus (Type 2): 1967, 1968, 1969, 1970, 1971 (with 1600cc engine)
• Custom Applications: Any sand rail, dune buggy, or trike utilizing a 12-volt Type 1 VW engine and a 130-tooth flywheel.

SPECS

• Brand: Bosch
• Part Number: SR15NP (New Production)
• Voltage: 12 Volts
• System Compatibility: Negative Ground
• Housing Material: High-strength cast aluminum and steel
• Weight: 6.95 lbs
• Flywheel Compatibility: Designed for 130-tooth flywheels
• Design Type: Standard frame starter with integrated solenoid
• Finish: Natural metal / Black protective coating
• Terminal Configuration: Standard VW Terminal 30 (Battery) and Terminal 50 (Ignition)

PRO TIPS

Always Replace the Bellhousing Bushing

One of the most common mistakes when installing a new Type 1 starter is neglecting the starter bushing located inside the transmission bellhousing. Because the Type 1 starter shaft is "unsupported" on the end of the starter itself, it relies entirely on that small brass bushing in the transaxle to keep the armature centered. If that bushing is worn, oval-shaped, or missing, the new starter will bind, grind, or spin slowly, eventually leading to internal damage and a voided warranty. We highly recommend using a bushing removal tool to pull the old one and tapping in a fresh, lubricated bushing before you bolt this Bosch unit into place to ensure a perfect, concentric spin every time.

Check Your Ground Straps and Battery Cables

A starter is only as good as the current it receives. Many "starter problems" are actually caused by a corroded ground strap between the transmission nose cone and the chassis. Before installing your new Bosch starter, take five minutes to remove, clean, or replace your main battery cables and the transmission ground strap. High resistance in these wires causes voltage drops that result in the dreaded "click" or slow cranking, especially when the engine is hot. Ensuring you have a clean, metal-to-metal connection will maximize the high-torque output of this 12-volt motor and prolong the life of the internal solenoid contacts.

Verify Terminal 50 Voltage

If you find that your new starter occasionally fails to engage or just clicks when you turn the ignition key, you may have a