Package includes 6 ignition coil packs.\n\n

BDFHYK UF646 ignition coil pack 6-piece set for Ford Lincoln

BDFHYK UF646 OE-style replacement ignition coil detail

BDFHYK ignition coils for Ford F-150 Explorer 3.5L

BDFHYK ignition coils for Ford Expedition Flex Lincoln

BDFHYK UF646 ignition coil connector boot and mounting detail

BDFHYK OE-style Ford Lincoln UF646 ignition coil 6-pack

BDFHYK 6PCS Ignition Coil Pack UF646 for Lincoln MKS MKT Navigator,Ford F-150 Explorer Expedition Taurus Flex 2012-2017 V6 3.5L

$69.34

Product Detail

Type Ignition Coil
SKU BDDLZ-BD-05-07164BK
OE Number DG-549, C1814, UF646, BL3Z-12029-C, BL3Z-12029-B, BL3Z-12029-A

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UF646 Ignition Coil Pack for Listed Ford and Lincoln 3.5L V6 Applications

This BDFHYK 6-piece ignition coil pack is an OE-style aftermarket replacement option for listed Ford and Lincoln 3.5L V6 service groups using a matching UF646, DG549, or BL3Z12029-series coil.

Driving Situations That Can Expose Coil Weakness

Uneven idle after startup or while stopped in gear.
Hesitation during passing, towing, hill climbing, or highway merging.
Intermittent misfire symptoms that appear mainly under heavier engine load.

Listed Vehicle Groups

Listed service groups include selected Ford F-150, Explorer, Expedition, Flex, Taurus, and Lincoln 3.5L V6 applications using a matching coil design. Confirm the exact production year and engine configuration before ordering.

Reference and Package Details

Reference numbers: UF646, UF-646, DG549, C1814, BL3Z-12029-A, BL3Z-12029-B, BL3Z-12029-C, E1146.
Package includes 6 ignition coil packs.
Spark plugs are not included.

Fitment Confirmation

Compare the original OE number, connector keying, coil body, mounting point, and boot length. Ford 3.5L applications can use different coils across engine versions and production changes.

Installation Notes

Inspect spark plugs, coil boots, wiring connectors, and plug wells before installation. If symptoms remain, continue diagnosis of injectors, air leaks, fuel pressure, sensors, and engine compression.

Technical Specifications

Brand & Part Reference	BDFHYK UF646 ignition coil pack
Package Includes	6 ignition coil packs
Includes	6 Ignition Coils
Replacement Type	OE-style aftermarket ignition coil replacement
Reference Numbers	UF646, UF-646, DG549, C1814, BL3Z-12029-A, BL3Z-12029-B, BL3Z-12029-C, E1146
Ford Fitment	Selected F-150, Explorer, Expedition, Flex, and Taurus listed service groups
Lincoln Fitment	Selected Lincoln 3.5L V6 service groups using a matching coil design
Engine / Application Check	Listed 3.5L V6 applications using a matching UF646-style coil
Common Service Scenarios	Cold-start roughness, unstable idle, hesitation under acceleration or load, and diagnosed cylinder misfire symptoms
Required Fitment Checks	Confirm year, model, 3.5L engine, OE number, connector keying, coil body, mounting point, and boot length
Installation Checks	Inspect spark plugs, coil boots, connectors, wiring, and oil or moisture in the plug wells before installation
Important Note	Spark plugs are not included; this is not a factory-branded Ford or Lincoln part; similar symptoms may have other causes

Q: Will this UF646 ignition coil set fit my vehicle?
A: It is designed for the listed service groups using a matching UF646-style coil. Confirm year, model, 3.5L engine, OE number, connector keying, coil body, mounting point, and boot length before ordering.

Q: What is included?
A: Package includes 6 ignition coil packs.

Q: Are spark plugs included?
A: No. Spark plugs are not included.

Q: Which reference numbers should I compare?
A: Compare UF646, UF-646, DG549, C1814, BL3Z-12029-A, BL3Z-12029-B, BL3Z-12029-C, E1146 against the original coil and vehicle service information.

Q: When might ignition coil testing be needed?
A: Cold-start shaking, rough idle, hesitation during acceleration or load, a check engine light, or a cylinder-specific misfire code may justify testing.

Q: Should all six coils always be replaced together?
A: Not always. Replace only the failed coil when the others test correctly, or service all six when age, mileage, diagnosis, and the repair plan support a complete set.

Q: What should I inspect before installation?
A: Inspect spark plug condition and gap, coil boots, electrical connectors, wiring, and oil or moisture in the plug wells.

Q: Can new ignition coils fix every misfire?
A: No. Misfires can also come from spark plugs, injectors, wiring, air leaks, fuel pressure, sensors, timing, or engine mechanical problems.

Q: Is this a factory-branded Ford or Lincoln part?
A: No. BDFHYK ignition coils are OE-style aftermarket replacement parts.

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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