BOSCH SPARK PLUG - (STANDARD)

Bosch · Part number WR5DC+ · NZ$23.00 incl. GST

For your classic European stunner like the Alfa Romeo 155 V6, Lancia Delta, or even that sweet Ford Capri Super Injection, spark plugs are the unsung heroes of your ignition system, delivering that crucial spark to get your engine humming, and this BOSCH option is a top-notch, OE-quality choice that'll have your ride purring like a kitten.

Price

NZ$23.00 including GST. Part number WR5DC+.

Fits these vehicles

• Abarth Ritmo (1983–1987)
• Alfa Romeo 145 (1994–1996)
• Alfa Romeo 145 (1994–1996)
• Alfa Romeo 146 (1994–1996)
• Alfa Romeo 146 (1994–1996)
• Alfa Romeo 155 (1992–1995)
• Alfa Romeo 155 (1992–1997)
• Alfa Romeo 155 (1992–1997)
• Alfa Romeo 155 (1992–1997)
• Alfa Romeo 164 (1987–1991)
• Alfa Romeo 164 (1987–1992)
• Alfa Romeo 164 (1987–1992)
• Alfa Romeo 164 (1992–1998)
• Alfa Romeo 164 (1992–1998)
• Alfa Romeo 166 (1998–2000)
• Alfa Romeo 1750-2000 (1968–1972)
• Alfa Romeo 33 (1983–1986)
• Alfa Romeo 33 (1983–1989)
• Alfa Romeo 33 (1983–1989)
• Alfa Romeo 33 (1983–1993)
• Alfa Romeo 33 (1984–1986)
• Alfa Romeo 33 (1984–1987)
• Alfa Romeo 33 (1984–1987)
• Alfa Romeo 33 (1984–1988)
• Alfa Romeo 33 (1984–1989)
• Alfa Romeo 33 (1984–1989)
• Alfa Romeo 33 (1986–1989)
• Alfa Romeo 33 (1986–1989)
• Alfa Romeo 33 (1986–1989)
• Alfa Romeo 33 (1986–1989)
• Alfa Romeo 33 (1986–1989)
• Alfa Romeo 33 (1986–1989)
• Alfa Romeo 33 (1988–1989)
• Alfa Romeo 33 (1988–1989)
• Alfa Romeo 33 (1990–1992)
• Alfa Romeo 33 (1990–1992)
• Alfa Romeo 33 (1990–1994)
• Alfa Romeo 33 (1990–1994)
• Alfa Romeo 33 (1992–1994)
• Alfa Romeo 33 (1992–1994)

Description

Give Your European Classic the Spark It Deserves — Featuring BOSCH
> Spark plugs, eh? They're the real heart of your ignition system, transforming all that high-voltage juice into the fiery spark that lights up your engine's party. For those spirited European beauties like the Alfa Romeo 155 V6, a turbocharged Lancia Kappa, or even a legendary Ford Capri Super Injection, tired plugs mean misfires, a rough idle, and that gut-wrenching hesitation when you really want to feel the power. These machines demand pinpoint ignition timing, and knackered electrodes just won't cut it.

Symptoms That Led You Here
• Engine misfires or stumbles under acceleration
• Rough or lumpy idle, especially when cold
• Noticeable drop in fuel economy
• Difficulty starting, particularly in damp NZ mornings
• Check engine light illuminated (often P0300-P0304 misfire codes)
• Sluggish throttle response where the engine once felt sharp
• Failed emissions test due to incomplete combustion

Will it pass WOF?
Spark plugs themselves are not a direct WOF inspection item, however the symptoms of worn plugs—excessive exhaust emissions, rough running, and potential catalytic converter damage—can cause WOF failure. NZ's visual smoke test will flag vehicles running rich due to incomplete combustion from fouled or worn plugs.

DIY or Workshop?
Difficulty: 4/10 for most inline-four configurations | 6/10 for V6 models like the Alfa 155 where rear bank access is tight

Estimated time: 30-60 minutes depending on engine layout

Tools required: Spark plug socket (usually 16mm or 21mm), ratchet with extension, torque wrench, gap gauge, dielectric grease, compressed air for cleaning plug wells

Expert Recommendation
Bob and the CARFIX team recommend replacing spark plugs at manufacturer intervals—typically 30,000-60,000km for copper plugs or up to 100,000km for platinum/iridium types. On classic European performance cars, fresh plugs transform throttle response and restore that characteristic engine note these vehicles are loved for. The BOSCH WR5DC+ is an outstanding choice, engineered with German precision that matches the OE specifications these European marques demand. Bob @ CARFIX is always on hand to help you work out exactly what plug grade and heat range suits your Alfa, Lancia, or classic Ford. Make sure you head over to Bob's Shop for a chat!

Fitment Notes
• This plug suits a wide range of 1968-2001 European vehicles including Italian exotics (Alfa Romeo 33 QV, 155 V6, Lancia Delta, Fulvia) and German classics (Audi 100, VW Scirocco)
• Always verify electrode gap specification for your specific engine variant—turbocharged applications like the Lancia Kappa 16V Turbo often require tighter gaps
• Some Lancia and Alfa models may have recessed plug wells requiring a magnetic socket
• Replace all plugs as a set to maintain balanced combustion across cylinders

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🛠️ Bob's Pro Tip: Do the Job Right!
> If you're replacing this spark plug, make sure you've got the right workshop prep, protection, and safety gear ready. Taking a bit of extra time and using the proper safety stands and cleaners makes all the difference for a professional result!

🧰 What Else You'll Need:
• Safety First: Always secure your vehicle on heavy-duty safety jack stands before working underneath. Never rely solely on a hydraulic jack.
• Clean Hands: Keep a pack of Nitrile Gloves handy to protect your skin from grease, oils, and chemical sprays.
• Preparation: Have microfibre towels and a suitable parts cleaner nearby to keep components clean during installation.