NGK 97506 SILZKBR8D8S Colder Spark Plugs - BMW N55/S55 M135i M235i 335i 435i M2 M3 M4
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Description
NGK 97506 SILZKBR8D8S colder spark plugs for tuned BMW N55 and S55 engines.
A popular ignition upgrade for modified and higher-boost BMWs, the NGK 97506 SILZKBR8D8S is suitable where a colder plug has been specified by the vehicle's tuner. Choose either 1 plug or a pack of 6 for a complete six-cylinder engine service.
Heat range and use
For BMW N55 and S55 applications, the NGK 97506 is generally regarded as a 1-step colder plug. It is commonly referred to as 2-step colder when compared with N54 applications. Plug gap should be set to suit the vehicle's tune, boost level and fuel, following the tuner's specification.
BMW fitment
- BMW M135i F20 / F21 - N55
- BMW M235i F22 / F23 - N55
- BMW 335i F30 / F31 / F34 - N55
- BMW 435i F32 / F33 / F36 - N55
- BMW M2 F87 - N55
- BMW M2 Competition F87C - S55
- BMW M3 F80 - S55
- BMW M4 F82 / F83 - S55
Part details
- Brand: NGK
- Component: Spark Plug
- Component number: 000301
- NGK stock number: 97506
- NGK part number: SILZKBR8D8S
- Euro Car Parts reference: 408994300
- Spanner size: 14 mm
- Spark plug: 1 earthed electrode; fixed SAE connector; interference suppression 5 kOhm; iridium middle electrode; gasket seat
- Spark position: 6.0 mm
- Thread length: 27.5 mm
- Thread size: M12 x 1.25
- Type: Iridium
- Vehicle version / hex: Bi-Hex
Recommended use: Tuned, remapped or higher-boost N55 and S55 engines where a colder plug has been specified by the tuner.
Fitment note: Always verify the NGK part number against the vehicle and tuning specification before installation. A colder spark plug is not automatically an upgrade for every standard engine.
More information
Get Booked in for fitting here
Warranty, Shipping and Returns
Products are supplied with the applicable manufacturer warranty. We offer UK and worldwide shipping. Please refer to the live availability information and our shipping and returns policies before ordering. Contact us if you need to confirm compatibility, intended use or any product-specific conditions.
Finance Options
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Specifications
- Brand
- NGK
- Product type
- Spark Plugs
- SKU:
- NGK-SILZKBR8D8S-6
- Barcode
- NGK-SILZKBR8D8S
- Pack Size
- Pack of 6
- Vehicle make
- BMW
- Vehicle model
- M135i, M235i, 335i, 435i, M2, M3, and M4
- Vehicle variant
- F20, F21, F22, F23, F30, F31, F34, F32, F33, F36, F87, F87C, F80, F82, and F83
You’ll earn 146 Laps
For 1 item, including VAT but excluding delivery.
How it works
Sign in before ordering. Earn 1 Lap for every whole £1 of eligible product spend, including VAT.
Delivery, gift cards, sale-priced or discounted items and trade purchases do not earn Laps.
Purchase Laps become available 30 days after payment. Returns and refunds remove Laps earned on refunded items; pending Laps are cancelled.
This estimate follows your selected option and quantity. Checkout discounts can change eligibility. Bundle prices count once. Appstle records the final award after payment.
Sign in, open Spend Laps and choose an available reward. Redeem your Laps, copy your unique discount code and enter it at checkout using the same customer account.
Your tier makes your Laps go further: 1,000 Laps are worth £10 at Rookie, £12.50 at Contender, £20 at Pro or £25 at Champion. Choose £5 off £100, £10 off £200, £25 off £500 or £50 off £1,000 of eligible products.
Minimum spends include VAT and exclude delivery and ineligible products. Use one reward or discount code per order; it cannot be combined with any other product, order or shipping discount. Rewards apply only to eligible products and variants shown in your rewards profile. Returns and refunds remove the Laps earned on refunded items; pending Laps are cancelled. Spending Laps does not reduce your qualifying lifetime spend. Laps and standard reward codes do not expire.
Need help?
Product questions answered
Helpful answers before you order. Need more detail? Our team can help.
How do I confirm this part fits my vehicle?
Check the model, year, engine, chassis and any exclusions in the product description. Select the required option before adding to your basket. The vehicle selector helps narrow your search; contact us if your car has different factory options or existing modifications.
Does this include everything for the service?
Check the listed quantities and included components. Service requirements vary by engine and scheduled work. Contact us with your vehicle details and planned job if you need help identifying the required parts.
When will my order arrive?
Select your required option and check the live availability message above. Dispatch is when your order leaves us; delivery takes additional time and depends on the service and destination. If no verified lead time is shown, or you need the item for a fitting appointment or event, contact Nineteen72 Performance before ordering.
What is included in the price?
Check the product description, selected option and stated quantity before ordering. Images may show optional equipment or an example installation. If you need a matching pair, a complete kit or additional hardware, ask us to confirm exactly what is included.
How do I get help before ordering?
Contact Nineteen72 Performance with a link to this product and your question. For vehicle-specific parts, include your model, year, engine and any modifications that may affect compatibility.
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