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BDFHYK OE-style Audi VW UF274 ignition coil and spark plug set

BDFHYK 4 Ignition Coil UF274 and 4 Iridium Spark Plug 6418 For VW Beetle Golf Jetta Passat,Audi A4 A6 A8; 1.8L 4.2L L4 V8

$78.49

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-11324-CK
OE Number For Coil: 06B905115B, 06B905115E, UF274, 5C1036, C1318, 178-8307, E878
OE Number For Spark plug:6418, BKR6EIX, 6458, PFR6Q, 1UN718110, 22401AA510, 3539

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Technical Specifications

Brand & Model	BDFHYK UF274 Ignition Coil & 6418 Iridium Spark Plug Set
Package Includes	4x BDFHYK ignition coils (UF274) + 4x iridium spark plugs (6418)
Replacement Type	OE-style aftermarket ignition coil and spark plug service kit
Ignition Coil OE	06B905115B, 06B905115E, UF274, 5C1036, C1318, 178-8307, E878
Spark Plug OE	6418, BKR6EIX, 6458, PFR6Q, 1UN718110, 22401AA510, 3539
Audi Fitment	Audi A4, A4 Quattro, A6 Quattro, A8 Quattro, S6, S8, TT, and TT Quattro listed applications
Volkswagen Fitment	Volkswagen Beetle, Golf, Jetta, and Passat listed applications
Fitment Checks	Confirm engine, UF274-style coil, 6418 plug reference, connector shape, coil length, mounting style, plug reach, seat type, and gap requirement
Common Symptoms	Rough idle, hard start, hesitation, misfire symptoms, poor acceleration, reduced fuel economy, check engine light
Diagnostic Notes	Symptoms may also come from wiring, oil in plug wells, fuel delivery problems, vacuum leaks, or compression faults
Installation Notes	Inspect plug wells for oil or moisture, confirm plug gap, and follow Audi or Volkswagen torque guidance
Critical Note	This package contains 4 coils and 4 spark plugs. For listed V8 applications, it is not a complete 8-cylinder service quantity unless only four cylinders are being serviced
Important Note	This is not a factory-branded Audi or Volkswagen part

UF274 Ignition Coil and 6418 Spark Plug Set for Audi and Volkswagen

This BDFHYK UF274 ignition coil and 6418 iridium spark plug set is designed for listed Audi and Volkswagen applications that use matching UF274-style coil and 6418 spark plug references. It is intended for ignition service when the original coils or spark plugs have been diagnosed as worn, weak, damaged, or related to misfire symptoms. Because this package includes 4 coils and 4 spark plugs, confirm whether your engine needs a complete service quantity or a partial replacement quantity before ordering.

Vehicle Fitment for This UF274 Ignition Kit

Make	Listed Models	Listed Years	Fitment Check
Audi	A4, A4 Quattro, A6 Quattro, A8 Quattro, S6, S8, TT, TT Quattro	1997-2004 listed applications	Confirm engine, UF274-style coil, connector, and plug specification.
Volkswagen	Beetle, Golf, Jetta, Passat	1999-2001 listed applications	Compare the removed coil, plug reference, and original service information.

Quantity note: This package includes 4 ignition coils and 4 spark plugs. For listed V8 applications, this is not a complete 8-cylinder service quantity unless only four cylinders are being serviced. Confirm the number of coils and plugs needed before ordering.

When This Audi VW Coil and Plug Set May Be Needed

Ignition coils and spark plugs may need inspection when the engine has rough idle, hard start, hesitation, poor acceleration, misfire symptoms, reduced fuel economy, or a check engine light. Symptoms can also be caused by wiring, oil in plug wells, fuel delivery problems, vacuum leaks, or compression faults. For budget and labor planning, see Volkswagen and Audi ignition coil replacement cost factors.

UF274 and 6418 Reference Checks

Compare 06B905115B, 06B905115E, UF274, 5C1036, C1318, 178-8307, and E878 with the original coil.
Compare 6418, BKR6EIX, 6458, PFR6Q, 1UN718110, 22401AA510, and 3539 with the required spark plug.
Confirm connector shape, coil length, mounting style, plug reach, seat type, heat range reference, and plug gap requirement.
Confirm whether the vehicle requires 4 plugs, 6 plugs, or 8 plugs before using this package for a full service.

Installation and Service Notes

Work on a cool engine, inspect old plugs for fouling, check plug wells for oil or moisture, and follow Audi or Volkswagen torque guidance. If a misfire remains after installation, continue diagnosis by checking wiring, injector operation, intake leaks, and compression. This BDFHYK set is an OE-style aftermarket replacement, not a factory-branded Audi or Volkswagen part.

Q: Will this UF274 ignition coil and spark plug set fit my vehicle?
A: It is listed for selected Audi and Volkswagen applications using UF274-style coils and 6418-style spark plugs. Confirm year, engine, OE reference, connector, and plug specification before ordering.

Q: What is included in the package?
A: The package includes 4 ignition coils and 4 iridium spark plugs. For V8 applications, this is a partial service quantity unless only four cylinders are being serviced.

Q: Is this 4-piece kit enough for a V8 application?
A: No, not for a complete V8 service. This package includes 4 coils and 4 spark plugs, so it is a partial service quantity for V8 applications unless only four cylinders are being serviced.

Q: Which OE or interchange references should I compare?
A: Compare 06B905115B, 06B905115E, UF274, 5C1036, C1318, E878, and spark plug references 6418 / BKR6EIX with your original parts.

Q: What symptoms may point to worn ignition coils or spark plugs?
A: Common symptoms may include rough idle, hard start, hesitation, misfire symptoms, poor acceleration, reduced fuel economy, check engine light. These symptoms should be diagnosed before replacing parts.

Q: Can this kit solve an engine misfire?
A: It may help only when the ignition coils or spark plugs are confirmed as the failed parts. Misfires can also be caused by wiring, fuel, air, sensor, or compression issues.

Q: Do I need to check spark plug gap and torque?
A: Yes. Always follow vehicle-specific service information for spark plug gap and torque. Do not force a plug into the cylinder head.

Q: Should I compare the connector and mounting style?
A: Yes. The connector shape, coil body, boot length, and mounting points should match the removed parts before installation.

Q: Should all coils and plugs be replaced at the same time?
A: That depends on the repair plan and diagnosis. Some owners service a full bank or full engine set, while others replace only the confirmed failed parts.

Q: What else can cause the same symptoms?
A: Symptoms may also come from wiring, oil in plug wells, fuel delivery problems, vacuum leaks, or compression faults. Check related systems if symptoms remain after installation.

Q: Is this a factory-branded part?
A: No. This is a BDFHYK OE-style aftermarket replacement, not a factory-branded Audi or Volkswagen part.

Returns & Refunds

We accept returns within 30 days of delivery for eligible items. If the product is unused and in original condition, you may request a return according to our refund policy. Full policy details: View Refund Policy . We recommend contacting our support team before initiating a return to ensure the fastest resolution.

Customer Support

If you purchased the wrong part, received an incompatible item, or need installation assistance, please contact us directly.

Email: service@bdfhyk.com

Business Hours:

Mon–Fri 9:00–18:00 (GMT+8)

Mon–Fri 19:00–04:00 (UTC−6 / CST)

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Integrated R&D, production, and warehousing. Eliminate middleman markups: same quality at lower prices, superior quality at same prices.

Precision Inspection, Commitment to Excellence
Rigorous inspection process, international certification standards. Each product includes individual inspection.

Before vs After Replacement

Replacing worn ignition coils and spark plugs helps restore stable ignition and smoother engine performance.

BEFORE

Rough Idle & Engine Vibration Noticeable engine shaking while idling. Irregular exhaust flow may indicate unstable ignition performance.

AFTER

Fast Start & Stable Idle IMore consistent spark delivery reduces misfires and stabilizes idle speed.

BEFORE

Sluggish Acceleration Weak throttle response at lower RPM. Vehicle may feel underpowered.

AFTER

Enhanced Power Response Improved throttle response and smoother acceleration

BEFORE

Increased Fuel Consumption Poor combustion can lead to higher fuel usage.

AFTER

Improved Fuel Efficiency Optimized ignition supports more efficient combustion.

Performance improvements may vary depending on vehicle condition.