2014 Ford Focus Spark Plugs: Best Picks for 2026

The best spark plugs for a 2014 Ford Focus depend on which 2.0L engine you have. The standard naturally aspirated Focus and the turbocharged Focus ST can use different plug specifications, so fitment and gap matter more than brand alone.

For broad 2014 Focus coverage, the Sixity Auto NGK Iridium IX 4-Pack is our best overall pick because its listing separates naturally aspirated and turbo 2014 applications. The Sixity Auto Champion Iridium 4-Pack is the value-focused alternative.

We checked current product listings, fitment details, plug specifications, Ford maintenance guidance, and recall information before rebuilding this guide.

Spark Plugs for a 2014 Ford Focus Compared

Spark Plugs for a 2014 Ford Focus: Our Top Picks

1. Sixity Auto NGK Iridium IX 4-Pack

Bottom line: This is the easiest plug-only set to shortlist when you need a verified 2014 Focus listing that distinguishes naturally aspirated and turbo 2.0L applications. Confirm your exact trim before ordering.

• Package: Four spark plugs, enough for the four-cylinder engine
• Plug type: NGK Iridium IX, a fine-wire iridium design
• Fitment: 2014 Focus 2.0L NA and turbo listed
• Gap guidance: Seller lists different NA and turbo specifications

The listing is sold through Sixity Auto and identifies the contents as genuine NGK parts. That makes it a straightforward option when you want four matching plugs instead of a mixed ignition kit.

The important part is engine identification. The listing separates the 2014 naturally aspirated 2.0L from the turbocharged version, so do not copy a gap specification from another Focus without checking your engine first.

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2. Sixity Auto Champion Iridium 4-Pack

Bottom line: Choose this set when you want four Champion iridium plugs for routine service and the vehicle-fitment tool confirms your 2014 Focus.

• Package: Four spark plugs, enough for one four-cylinder service
• Plug type: Champion iridium, fine-wire precious-metal design
• Fitment: Focus 2012–2018 listing spans multiple engines
• Gap guidance: Verify against your exact engine before installation

Champion describes its iridium plugs as using a fine-wire iridium center electrode with a precious-metal ground design. That construction is aimed at maintaining a stable ignition gap over normal service.

This listing is broader than the top pick, so fitment deserves extra attention. Match the engine and existing plug specification rather than relying only on the model-year range in the product title.

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3. Sixity Auto NGK Iridium IX 2012–2017 4-Pack

Bottom line: This is another NGK Iridium IX four-pack for 2014 Focus buyers, but its listing explicitly says gap adjustment may be required for the 2014 applications.

• Package: Four spark plugs for a complete replacement
• Plug type: NGK Iridium IX
• Fitment: 2014 2.0L NA and turbo applications listed
• Gap guidance: Listing says adjustment is required for listed 2014 setups

The Amazon product data identifies an M14 x 1.25 thread and iridium core. Its vehicle list includes a 2014 naturally aspirated 2.0L application and a turbocharged 2.0L application.

The catch is the gap-adjustment note. If you are uncomfortable checking a fine-wire plug gap without damaging the electrode, have the specification confirmed and the plugs checked before installation.

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4. NGK Iridium IX LTR6IX-11 6509 4-Pack

Bottom line: If you own a 2014 Focus ST, this is the most clearly targeted plug in the roundup. The listing identifies NGK model 6509/LTR6IX-11 for the 2013–2014 Focus ST 2.0L.

• Package: Four plugs, enough for one Focus ST engine
• Plug type: NGK Iridium IX LTR6IX-11
• Fitment: 2013–2014 Focus ST 2.0L listed
• Gap guidance: Verify the required installed gap for your setup

The listing identifies this plug as NGK model 6509 and uses an iridium center electrode. Its Focus fitment is narrower than the general-purpose listings above, which makes it easier to shortlist if your car is specifically a 2014 ST.

Do not treat a turbo Focus ST like a base Focus during plug selection. Modified engines can also call for different plug heat ranges or gaps, so follow the tune provider or service information if your ST is not stock.

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5. A-Premium Iridium Platinum 4-Pack

Bottom line: The A-Premium set is the budget-oriented choice for a 2014 2.0L Focus when its LTR6EI9-style specifications match your required plug.

• Package: Four spark plugs
• Plug type: Iridium tip with platinum center-electrode core
• Fitment: Ford Focus 2012–2018 2.0L listed
• Gap guidance: Listing specifies 0.036 inch

The current listing gives useful dimensional information: a 14 mm thread diameter, 25 mm reach, 5/8-inch hex and flat seat. That makes it easier to compare the part with your existing plug or service data before installation.

Its reference number includes LTR6EI9. As with every aftermarket replacement here, match that specification to your exact engine rather than assuming every 2014 Focus uses the same plug.

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6. X4XZ UF670 + LTR6BHX Coil and Plug Kit

Bottom line: Choose this X4XZ kit only when you have a reason to replace ignition coils as well as plugs. For normal scheduled plug service, one of the plug-only sets is simpler.

• Package: Four UF670 coils plus four LTR6BHX plugs
• Plug type: Double-iridium plugs
• Fitment: Focus 2012–2018 2.0L listed
• Gap guidance: Confirm plug specification for your exact engine

The product model is listed as UF670+LTR6BHX, and the Amazon page identifies a one-year manufacturer warranty. UF670/DG546-family replacement numbers are associated with Ford coil-on-plug applications, but that does not eliminate the need for a vehicle-fitment check.

Replacing all four coils simply because the plugs are due can add unnecessary cost. A coil kit makes more sense after a misfire diagnosis, visible coil or boot damage, or another reason to suspect the coils.

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7. OYEAUTO UF670 Coil Pack + Iridium Spark Plugs

Bottom line: This is another eight-piece ignition refresh kit, with four OYEAUTO coils and four iridium plugs. Buy it only after confirming both the coil and plug fitment for your specific 2014 Focus.

• Package: Four ignition coils plus four spark plugs
• Plug type: Iridium plugs
• Fitment: Broad Ford Focus 2.0L/2.3L listing
• Gap guidance: Confirm the included plug specification before installation

The current product data identifies eight pieces in the set: four ignition coils and four iridium spark plugs. The manufacturer part number shown on the listing is OYEDXQAN7660.

The listing covers many Ford, Lincoln and Land Rover applications. That breadth is exactly why you should check your year, engine and VIN carefully before ordering rather than relying on the UF670 number alone.

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Sixity Auto NGK Iridium IX vs Champion Iridium: Is the Upgrade Worth It?

Both are four-plug replacement sets. The practical difference is fitment clarity: the NGK listing gives more explicit 2014 naturally aspirated and turbo guidance, while the Champion set is the simpler value-focused alternative.

• Fitment detail: The NGK listing separates 2014 NA and turbo applications.
• Brand: One bundle contains NGK Iridium IX plugs; the other contains Champion plugs.
• Buying decision: Choose confirmed engine fitment before choosing by price alone.

Which Spark Plugs for a 2014 Ford Focus Should You Buy?

• Most base-Focus buyers: get the Sixity Auto NGK Iridium IX 4-Pack after confirming fitment.
• Value-focused routine service: get the Sixity Auto Champion Iridium 4-Pack.
• 2014 Focus ST: check the NGK LTR6IX-11 6509 4-Pack first.
• Budget aftermarket set: consider the A-Premium Iridium Platinum 4-Pack if its dimensions match.
• Coils and plugs both need replacement: consider the X4XZ UF670 + LTR6BHX Kit.

Fitment and Installation Safety

Do not order spark plugs for a 2014 Focus from the model year alone. First identify whether you have the standard naturally aspirated 2.0L or the turbocharged Focus ST. Plug part number, heat range and gap can differ.

• Confirm the engine: use your VIN, under-hood information or service records.
• Match the complete plug: compare thread diameter, reach, seat, heat range and part number.
• Check the gap: verify it with an appropriate gauge even when a plug is sold pre-gapped.
• Use the correct torque: follow Ford or the plug manufacturer’s procedure for the aluminum cylinder head.
• Diagnose persistent misfires: plugs are only one possible cause; coils, injectors, compression and wiring can also matter.

How We Chose

• 2014 Focus fitment: the product had to have current evidence supporting an applicable Focus engine.
• Plug specification: we checked part numbers, material, package contents, gap information and dimensional details where available.
• Buyer intent: plug-only sets rank ahead of coil kits for ordinary spark-plug replacement.
• Primary sources: current Amazon product data, manufacturer information and Ford maintenance guidance were prioritized.
• Safety: recall searches and fitment conflicts were checked before products were recommended.

Buying Guide: Spark Plugs for a 2014 Ford Focus

Start With Your Engine

The 2014 Focus was sold in more than one engine configuration. A base 2.0L Focus and a Focus ST should not automatically be treated as having the same plug requirements. Confirm the engine before comparing brands, prices or gap numbers.

Match the Exact Part Specification

A spark plug must match more than the thread diameter. Reach, seat style, heat range, electrode design and plug projection can all matter. The safest comparison is the recommended service part or a verified cross-reference for your exact engine.

Do Not Guess the Gap

Different listings in this roundup show different gap guidance because they cover different applications or plug designs. Use the specification for your engine and plug rather than copying a number from another Focus owner. Handle fine-wire electrodes carefully when checking or adjusting the gap.

Iridium vs Platinum

Iridium and platinum are used because the electrode materials resist wear better than conventional nickel designs. That can help the plug maintain its intended shape and gap during a long service interval. Material alone does not make an incorrect plug suitable for your engine.

When Do You Need New Ignition Coils?

Spark-plug replacement does not automatically require four new coils. Keep healthy coils unless inspection or diagnosis gives you a reason to replace them. A coil-plus-plug kit is more appropriate when coil faults are confirmed or several aging ignition components are being refreshed together.

How Often Should the Plugs Be Changed?

Ford’s normal-maintenance schedule for the 2014 Focus calls for spark-plug replacement every 100,000 miles. Inspect the ignition system sooner when you have persistent misfire codes, hard starting, hesitation or other symptoms that need diagnosis.

Mistakes to Avoid When Buying Spark Plugs

• Shopping by year alone: identify your exact engine before ordering.
• Assuming pre-gapped means correct: verify the specification before installation.
• Choosing a colder plug without a reason: follow the correct stock or tuned-engine specification.
• Replacing coils without diagnosis: keep good coils during a normal plug service.
• Overtightening plugs: use the specified installation procedure and torque.

FAQs

Which spark plugs are best for a 2014 Ford Focus?

A confirmed-fit plug that matches your exact 2.0L engine specification is the best choice. For broad 2014 coverage, the Sixity Auto NGK Iridium IX 4-Pack has the clearest naturally aspirated versus turbo listing in this roundup. Focus ST owners should check the ST-specific specification separately.

What spark plugs does a 2014 Ford Focus ST use?

The NGK LTR6IX-11 6509 4-Pack listing specifically identifies the 2013–2014 Focus ST 2.0L. That does not mean every tuned ST should use the same setup. Modified engines can require different heat ranges or gaps, so follow the tune provider or correct service specification.

What is the spark plug gap on a 2014 Ford Focus?

There is not one safe gap number to apply to every 2014 Focus configuration. The linked Sixity NGK listing separates naturally aspirated and turbo applications, and another NGK listing specifically says adjustment may be required. Confirm the correct gap for your exact engine and plug part number before installation.

How often should spark plugs be replaced on a 2014 Ford Focus?

Ford’s normal-maintenance schedule lists spark-plug replacement every 100,000 miles for the 2014 Focus. That is a scheduled-service interval, not a diagnosis rule. If your engine develops a misfire, hard starting or hesitation, inspect and diagnose the ignition system rather than waiting for the mileage interval.

Do I need to replace ignition coils when I change the spark plugs?

No. Healthy ignition coils do not need automatic replacement just because you install new spark plugs. Inspect the coils, boots and connectors while they are removed. A kit such as the X4XZ UF670 + LTR6BHX makes more sense when coil replacement is actually part of the repair.

Can new spark plugs fix a rough idle or misfire?

They can fix the problem when worn, fouled, damaged or incorrectly gapped plugs are the cause. A misfire can also come from a weak coil, injector problem, air leak, wiring issue or mechanical fault. If symptoms remain after a correct plug replacement, diagnose the fault instead of replacing more parts at random.

Should I put anti-seize on new spark plugs?

Follow the spark-plug manufacturer’s installation instructions. Do not automatically add anti-seize, because thread coatings can change the relationship between tightening torque and clamping force. Install the plugs into a cool engine, start the threads by hand and use the specified tightening procedure.

Roundup Snapshot

Use the comparison above as your buying guide and confirm fitment again on the product page before checkout. Engine identification matters more than a generic “fits Ford Focus” claim.

Final Verdict

For most shoppers comparing spark plugs for a 2014 Ford Focus, the Sixity Auto NGK Iridium IX 4-Pack is the strongest starting point because the current listing gives separate 2014 naturally aspirated and turbo fitment guidance. Your engine specification still decides whether it is the correct plug.

For a value-focused plug set, check the Sixity Auto Champion Iridium 4-Pack. For the 2014 Focus ST, check the NGK LTR6IX-11 6509 4-Pack.

Product	Image	Best For	Core / Kit Type	Gap / Fitment Notes	Listed Dimensions
4 pc NGK Iridium IX Spark Plugs		Best overall plug-only replacement	Iridium-style plug set	Listed guidance includes 0.036 inch NA and 0.032 inch turbo; verify before install	3.7 x 0.94 x 3.32 inches
4 pc Champion Iridium Spark Plugs		Best value plug-only option	Iridium-style plug set	Gap may vary by engine and trim; verify with service data	3.75 x 0.93 x 3.32 inches
4 pc NGK Iridium IX Spark Plugs (2012-2017)		Best alternate NGK-style pick	Iridium-style plug set	Check seller fitment and adjust gap if required	3.7 x 0.94 x 3.32 inches
NGK Iridium IX Spark Plug LTR6IX-11		Best for Focus ST buyers	Iridium-style plug set	Best for confirmed 2013-2014 Focus ST applications	3.7 x 0.94 x 3.32 inches
A-Premium Iridium Platinum Spark Plugs		Best budget plug-only option	Iridium tip with platinum-style construction	Listed for many 2012-2018 Focus 2.0L applications; verify exact fit	4.09 x 3.74 x 0.94 inches
UF670 Ignition Coil & LTR6BHX Double Iridium Spark Plug		Best coil-plus-plug combo	Four coils plus four spark plugs	Buy only if you also need coils; confirm exact vehicle fitment	12.05 x 6.06 x 2.2 inches
OYEAUTO UF670 Coil Pack + Iridium Spark Plugs		Best complete ignition refresh	Four coils plus four spark plugs	Broad fitment range; verify year, trim and engine before ordering	Check listing for current package details