BDFHYK UF581 ignition coil and 4504 iridium spark plug set

UF581 ignition coil set for compatible Honda Fit 1.5L L4 applications

4504 iridium spark plugs with UF581 ignition coil set

BDFHYK 4-coil 4-plug ignition set for compatible Honda Fit applications

UF581 ignition coil replacement reference 30520-PWC-003

UF581 ignition coil replacement reference 30520-PWC-501

BDFHYK UF581 and 4504 ignition coil spark plug replacement set

BDFHYK Ignition Coil UF581 and Iridium Plugs 4504 For Honda 2007 2008 Fit 1.5L L4 Naturally Aspirated, Sets of 4

$58.99

Product Detail

Type Ignition Coil + Spark Plug Set
SKU BDDLZ-BD-05-07541-CK
OE Number Coil: UF581, 30520-PWC-003, 30520-PWC-501, UF-581, GN10249, 673-2308, C1578, 610-50119, 5C1635
OE Number For Spark plug:4504

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BDFHYK UF581 ignition coil and 4504 iridium spark plug set includes 4 ignition coils and 4 spark plugs for compatible Honda Fit 1.5L L4 applications. Because application years vary across current product references, confirm the exact year, engine, connector design, removed-part shape, and reference numbers before installation.

Product Details

Brand: BDFHYK
Product Type: Ignition Coil + Iridium Spark Plug Set
Package: 4 ignition coils + 4 spark plugs
Ignition Coil Reference: UF581
Spark Plug Reference: 4504
Application: Honda Fit 1.5L L4 — confirm exact year

Fitment Check

Match the exact vehicle year, 1.5L L4 engine configuration, connector keying, coil body, mounting points, boot profile, and replacement references with the removed components before installation.

Reference Numbers

Ignition coil comparison references include UF581, 30520-PWC-003, 30520-PWC-501, UF-581, GN10249, 673-2308, C1578, 610-50119, and 5C1635. The listed spark plug reference is 4504.

Diagnosis Before Replacement

Misfire, rough idle, hard starting, hesitation, or an ignition-related code can involve a coil or spark plug, but these symptoms can also come from wiring, fuel delivery, intake leaks, compression, timing, or other engine conditions.

Installation Notes

Compare the replacement coil and plug with the removed components.
Inspect plug wells for oil, moisture, corrosion, or debris.
Confirm electrical connectors are fully seated and retained.
Use exact vehicle service information for plug specification, gap, torque, and installation procedure.

Replacement Planning

Replace components according to diagnosis, condition, service history, labor access, and exact engine requirements. There is no universal ignition-coil replacement interval.

After Installation

If a misfire remains after installation, recheck fitment, connector seating, plug installation, and the affected cylinder before continuing diagnosis.

Technical Specifications

Brand	BDFHYK
Product Type	Ignition Coil + Iridium Spark Plug Set
Ignition Coil Quantity	4
Spark Plug Quantity	4
Ignition Coil Reference	UF581
Spark Plug Reference	4504
Primary Application	Honda Fit 1.5L L4 — confirm exact model year

Difficulty Moderate

Estimated Time 0.5–1 hour

Tools Required

Screwdrivers
Service manual specific to your vehicle
Socket set and ratchet
Wrenches

Pre-Installation Checklist

Stop the engine before disassembling or replacing the ignition coil.
Check the spark plugs and spark plug wires as part of diagnosis.
Keep the installation area clean and dry.
Make sure the ignition coil connections are correct.
Refer to the service manual for your specific vehicle because removal order and connector or fastener details can vary by make and model.
Disconnect the negative battery cable before working on the ignition system.

Installation Steps

Disconnect the battery. Remove the negative battery cable by loosening the clamp bolt with a socket or wrench.
Locate the ignition coils on top of the engine. They may be attached to the engine block or surrounding components.
Disconnect and remove the old ignition coil. Remove the mounting bolts or screws and disconnect the electrical connector(s). The order can vary by vehicle, so follow the vehicle-specific service manual. Remove the old coil once fully disconnected.
If one coil serves multiple spark plugs and has multiple electrical connections, mark or label the connectors so they can be reattached to the correct terminals.
Install the new ignition coil in the reverse order of removal. Secure the mounting bolts or screws and reconnect the electrical connector(s) in the correct positions.
Reconnect the negative battery terminal. Hand-tighten the connection, then tighten the terminal bolt with a socket or wrench. Do not over-tighten.
Close the hood, start the engine with the vehicle in Park, and confirm it starts and idles normally. If it does, test-drive the vehicle.

Post-Installation Verification

Confirm the new ignition coil is securely mounted.
Confirm all electrical connectors are connected to the correct terminals.
Confirm the negative battery terminal is reconnected and tightened sufficiently without over-tightening.
Start the engine in Park and confirm it starts and idles normally.
If idle is normal, test-drive the vehicle and check for remaining misfire or drivability symptoms.

Troubleshooting

Spark plug and wire checks from the manual:
With the engine running, disconnect spark plug wires one at a time and observe engine-speed or roughness changes; the manual states that no significant change can indicate a bad spark plug.
The manual describes checking for spark by holding the end of a disconnected spark plug wire near a metal surface and looking or listening for a spark or cracking sound.
While the engine is cranked, check for spark at each spark plug wire; the manual states that no spark can indicate a dead wire.
Make sure battery, ignition, coil, and spark-plug wire connections are secure. Wiggle connections and retest if a loose connection is suspected.
Keep spark plug ends clean and free of dirt, oil, or grease; clean and retest before replacing a plug.
Inspect wires for cracked, cut, scraped, or burned insulation. Check boots and terminals for damage, corrosion, or poor contact.
Check for corrosion between the boot, spark plug, and ignition coil, and inspect the spark plug for discoloration or damage.
Inspect spring clips and wire retention at the distributor and spark plug ends to make sure connections are held securely.
Ignition coil failure can cause one or more cylinders to misfire, stuttering, sluggishness, and other drivability issues.

BDFHYK Ignition Coil Installation Guide

Q: Which Honda Fit applications are listed for this UF581 set?

A: This set is listed for compatible Honda Fit 1.5L L4 applications. Model-year references vary, so confirm the exact year, engine, connector, and reference before installation.

Q: How many ignition coils and spark plugs are included?

A: The set includes 4 ignition coils and 4 iridium spark plugs.

Q: Which ignition coil references can I compare?

A: UF581 is the primary reference. Comparison references include 30520-PWC-003, 30520-PWC-501, UF-581, GN10249, 673-2308, C1578, 610-50119, and 5C1635.

Q: Which spark plug reference is listed?

A: The listed spark plug reference is 4504.

Q: Does a misfire code prove the coil has failed?

A: No. Misfire can also involve spark plugs, wiring, connectors, fuel delivery, intake leaks, compression, timing, or other engine conditions.

Q: Should all four coils be replaced at once?

A: Replacement scope should follow diagnosis, component condition, service history, and exact engine requirements.

Q: Should the spark plugs be inspected during coil replacement?

A: Yes. Check wear, fouling, damage, and the correct plug specification for the exact engine.

Q: What if oil or moisture is in a plug well?

A: Correct oil, moisture, corrosion, or debris before evaluating the replacement ignition parts.

Q: What if the engine still misfires after installation?

A: Recheck fitment, connector seating, plug installation, and the affected cylinder, then continue diagnosis of other possible causes.

Q: Which spark-plug gap or torque should I use?

A: Use service information for the exact vehicle and engine because installation specifications vary by application.

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)

Manufacturing Standards

Direct Factory Supply, Cost Saving
Integrated R&D, production, and warehousing. Eliminate middleman markups: same quality at lower prices, superior quality at same prices.

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Rigorous inspection process, international certification standards. Each product includes individual inspection.

5 stars: 13 (93%)
4 stars: 1 (7%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

Some of the reviews shown are from related products the merchant grouped with this one.

Worth the money

I used these for my sons 2004 crv and they fit well and everything has been excellent in just over 3000 miles

Good quality

Good deal fits as should runs very well

2006 Saturn Vue

These fit my 2006 Saturn Vue v6 with no problem

3 years in so far

So far 3 years in with my 2014 civic si. No issues yet

Great Product & Price

These last about 2 years on my Honda Fit which are notorious for throwing plugs and coils. They work well and give me no issues, plus value for the cost is great. Easy to install and no issues with fitment.

Fit a 2018 Honda Element

They plugged right into a 2018 Honda Element. Though seemed to make my misfire worse.

Got all six for what the local store wanted for just 1

Great product/deal.
Got all six for what the local store wanted for 1.
20K miles later - flawless

Bobinas honda crv 2008

Funcionan bien.

Great!

Great price and quality part

Save a ton of money!

Worked perfectly on my 2005 Honda Element EX Real Time AWD and saved me a ton of money. Parts matched perfectly. Seem very durable and it was a speedy replacement. Replaced all ignition coils and spark plugs at same time in about 20mins. The ignition coil pack alone from Autozone was $199.99! Spark plugs were $12-16 a piece. Figured doing this wouldn't hurt and it worked flawlessly and has been working just fine. May update after a few thousand miles.

Bargain

It was everything I expected it to be
Specially loved the price and quality

Double check all sizes.

The coils worked great, but the spark plugs were too short and not the right plugs. So pay attention to size.

Bobinas 2002 honda cr-v

Trabaja muy bien en mi carro

New coil packs and spark plugs

Started my 09 civic si right up. Works well so far. Instant start with no delay what so ever. Good product.
They also have pre-set gap of .044 on the spark plugs. standard 2.0L engine