SKU: 740221068

NGK Spark Plug for Mercedes-Benz & Chrysler - IFR6D-10

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Description

NGK Spark Plug for Mercedes-Benz & Chrysler - IFR6D-10Vehicle Fitment & Part Details This NGK spark plug (IFR6D 10) is supplied as an OEM grade replacement. Heat range 6. Thread M14 x 1,25. Verify VIN engine before ordering. Key Details SKU IFR6D 10 Alternate Search Reference IFR6D10 Component Spark Plug Brand NGK Heat Range 6 Part MPN 5344 GTIN Barcode 087295153444 Trade Numbers IFR6D10 Product Specifications Thread Size M14 x 1,25 Thread Length [mm] 19,0 Spanner Size 16 mm Spark Position [mm] 3,5

Vehicle Fitment & Part Details

This NGK spark plug (IFR6D-10) is supplied as an OEM-grade replacement. Heat range 6. Thread M14 x 1,25. Verify VIN/engine before ordering.

Key Details

SKU
IFR6D-10
Alternate Search Reference
IFR6D10
Component
Spark Plug
Brand
NGK
Heat Range
6
Part MPN
5344
GTIN / Barcode
087295153444
Trade Numbers
IFR6D10

Product Specifications

Thread Size
M14 x 1,25
Thread Length [mm]
19,0
Spanner Size
16 mm
Spark Position [mm]
3,5
Electrode / Construction
Iridium Middle Electrode, 1 - Earthed Electrode, Interference Suppression 1 kOhm, with gasket seat, Fixed SAE connector
Brand Class
Premium

Vehicle Compatibility

Common fitments include Chrysler (CROSSFIRE); Mercedes-Benz (A-CLASS, B-CLASS, C-CLASS, CLK, E-CLASS, SLK). Always confirm the correct heat range and electrode design for your specific engine variant by VIN before ordering.

OEM Reference Numbers

Vehicle OE Numbers

  • AMG: 003 159 97 03 26, A 003 159 97 03, A 003 159 97 03 26, 003 159 97 03
  • Mercedes-Benz: 003 159 97 03, A 003 159 97 03 90, 003 159 97 03 26, A 003 159 97 03, A 003 159 97 03 26
  • Smart: A 003 159 97 03 26, 003 159 97 03, 003 159 97 03 26, A 003 159 97 03, STEYR

Aftermarket Equivalents

  • Beru By Driv: Z170
  • Borgwarner (Beru): Z 170, 0001335910, Z 171, 14F7DPURX2, Z 282, 14FGH7DPURX2, 0001335905
  • Bosch: 0241235739, F7DPP332, 0 242 236 544, 38
  • Champion: CCH9805, KC8WYPB4, MAYBACH, A 003 159 97 03, A 003 159 97 03 26, 003 159 97 03, 003 159 97 03 26
Alternate OEM Search References: 003159970326, A0031599703, A003159970326, 0031599703, A003159970390, Z171

Fitment Notes

  • Always match heat range, thread size and electrode design before ordering. Verify VIN/engine.

Important: Spark plugs are not returnable, exchangeable, or refundable once fitted. Confirm you are ordering the correct part for your vehicle. Compare the new spark plug to the removed plug for thread reach, thread diameter, hex size, electrode style, gap specification, and heat range before fitting. Mismatched spark plugs can cause misfires, pre-ignition, detonation, fouling, or engine damage.

Returns Notice: Once a spark plug has been fitted or threaded into a cylinder head, it cannot be returned, exchanged, or refunded under any circumstances.

Installation / Use / Maintenance Tips

  • Allow the engine to cool fully before removal - cylinder heads are easily damaged when warm.
  • Use the correct deep-socket plug spanner (16 mm) and avoid impact tools.
  • Inspect the existing plug for fouling, oil contamination, or worn electrodes - may indicate engine condition issues.
  • Verify the gap if your supplied plug is not factory-set; consult your service manual for the correct value.
  • Apply a small amount of anti-seize to the threads (sparingly) and torque to manufacturer specification.

Common Questions

Will this NGK spark plug fit my Mercedes-Benz?
This part (IFR6D-10) is listed for the applications shown on this page. Always confirm the correct heat range, thread size and electrode design against your vehicle's service manual or a parts lookup before ordering. Verify VIN/engine.

What does the NGK part code mean?
The NGK trade number encodes physical and performance characteristics - thread/reach, electrode design, heat rating, and projection. Each digit and letter has meaning in NGK's naming convention. The heat range is usually the standalone digit (e.g. BPR6ES is heat range 6).

What is the difference between this NGK plug and a Bosch / Champion / Denso equivalent?
The cross-references listed under OEM Reference Numbers are functionally equivalent for the same applications, but materials, electrode design and heat dissipation can differ slightly. NGK is OEM-supply quality and most manufacturers specify NGK or Denso as their factory plug.

How do I confirm fitment if my engine variant isn't listed?
Match the supplied thread size, reach, electrode design and heat range against your existing plug. If unsure, request fitment assistance before ordering.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 740221068

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★★★★★ 4
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Reviewed in the United States on March 16, 2026
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MARCUS C.
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★★★★★ 5
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Reviewed in the United States on May 23, 2026
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Jack At Florida
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★★★★★ 5
Perfect Fit & Easy Install — Replaced Faulty Blade from Another Set
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This 17" Rain-X blade ended up replacing a faulty 17" blade from a 5 PLUS set (24"/17"/12") I originally installed. The 17" from that set had a defective internal adapter — it wouldn’t seat properly on the wiper arm & was extremely difficult to remove. Once I got it apart, the adapter looked warped or misformed. Rather than deal with a full return, I replaced just the 17" with this Rain-X blade. Installation on the Rain-X was quick & straightforward — it locked in properly with no issues. Performance so far is solid: Smooth wipe No streaking No excess sound Good contact across the windshield Now I’m effectively running a side-by-side comparison (Rain-X 17" vs 5 PLUS 24"/12"), & I’ll update later if anything changes over time. Overall, this blade did exactly what I needed — simple install & reliable performance.
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Belleville, US
★★★★★ 5
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