Top 10 5.7 Hemi Uf504 Coil Packs: Reliable Direct-fit Tune-up Options 2026

⚡ Quick Verdict

📋 How We Evaluated

Products were judged on fitment clarity for 5.7 Hemi applications, build quality claims like heat and weather resistance, and stated electrical performance. Performance expectations considered consistent spark delivery and symptom-focused claims. Value assessed bundle contents, warranty terms, and how suitable each option is for daily driving versus basic DIY repairs, using available Amazon rating signals.

Voltage	12V
Mount Type	Bolt On
Terminal Quantity	3
Connector Gender	Female / Male Terminal

What We Found

The ENA 8-pack of black ignition coils is aimed at 5.7L HEMI applications and calls out a direct-fit replacement path for UF504 along with several related interchange numbers. The listing also describes 12V operation and a bolt-on, three-terminal-per-coil setup, plus a female/male connector-style description that aligns with a straightforward swap.

This option is coil-only (no spark plugs included), and the listing doesn’t include deeper electrical specs like primary resistance or detailed materials – just general durability and installation expectations.

Coverage spans multiple Ram, Dodge, Chrysler, and Jeep model lines in the late 2000s through the 2010s, which fits how common UF504-style interchange shopping tends to go.

Who It’s For

I would shortlist this if your main goal is replacing all eight coils without getting into spark plug replacement – especially if your vehicle’s OE number lines up with the UF504 family. It’s also a good fit for routine, budget-oriented repairs where coil-only swapping makes sense.

The 12-month warranty helps for peace of mind, and the broad Mopar cross-compatibility can be helpful when you’re trying to confirm you’re not buying the wrong interchangeable cousin part.

Reference Number	UF504 (with additional cross references listed)
Socket Drive	3/8-inch
Connector/Install Type	Direct fit, plug-and-play
Spark Plug Type	Iridium (prepped for installation)

What We Found

The KAX kit pairs 8 ignition coils with 16 iridium spark plugs and includes a tool kit, so it’s built for a full “coil + plug” refresh rather than a piecemeal replacement.

The listing leans into an easy install by unplugging the old coil unit and plugging in the new one. A standout practical touch is the magnetic socket (3/8-inch drive design) meant to help prevent dropping plugs during service.

Fitment coverage is wide across Ram, Charger, Durango, Challenger, Grand Cherokee, and Commander, with UF504 referenced along with multiple alternate numbers. What’s missing is the kind of numeric coil electrical detail that can make compatibility feel more confident – so you’ll still want to verify the exact year/engine/OE number before ordering.

Who It’s For

I would consider this for drivers who want to tackle misfire and rough-idle complaints by replacing coils and plugs together, which reduces the chance you’re paying labor twice. The magnetic socket makes the plug portion less intimidating if you’re doing this DIY.

It’s especially appealing when your symptoms overlap with worn plugs too – like hesitation, hard starts, or check-engine codes such as P0300-P0308.

Package Content	8 ignition coil packs
Install Type	Direct factory fit, plug-and-play
Connector Protection	Watertight, weatherproof thermoplastic design
Primary Materials	Copper windings, premium bobbins (as claimed)

What We Found

Dragon Fire Performance offers an 8-piece coil pack set labeled for OE fitment across many 4.7L/5.7L/5.9L/6.1L/6.4L V8 HEMI applications. The listing focuses heavily on weather resistance and connector durability, including watertight, weatherproof connector claims built with thermoplastics meant to resist heat-related cracking and fracture.

It also references high-temp housing construction to help prevent voltage leaks and RFI interference. For performance messaging, it claims the output voltage is tested and ensured to meet or exceed OE levels, and it mentions performance-grade bobbins and premium copper windings.

The main limitation for shoppers is that it doesn’t provide numeric electrical specs (like primary resistance) and doesn’t clearly list warranty duration in the standout feature block.

Who It’s For

I’d shortlist this if you’re the type of buyer who pays attention to weatherproofing and connector durability – especially if you’ve dealt with moisture/heat swings where you live or drive.

It’s also a fit when you want a daily-driving coil replacement plan that’s aimed at stable ignition under load and in rough conditions. If you’re shopping because your coils are causing misfires or power loss, the emphasis on connector integrity is the hook here.

Replacement Part Numbers	UF504, C1526, 5C1569, E1004 (listed)
Mount Type	Direct OEM design (plug-and-play)
Package Content	Set of 8 ignition coils
Warranty	1 Year Free Replacement (as stated)

What We Found

This 8-coil option is positioned around a UF504 set and includes a long compatibility list across Dodge/Chrysler/Jeep platforms. The listing highlights direct OEM-style coil design and describes plug-and-play installation without modifications, which is exactly what most 5.7 Hemi owners want to avoid extra work.

It repeatedly anchors compatibility to UF504 and related interchange-style numbers such as C1526 and 5C1569, which helps it fit the “UF504 ecosystem” shoppers are trying to match. It also references common symptoms (misfire, hesitation, check-engine lights) and includes a warranty-style mention of one-year free replacement.

What it doesn’t give you is electrical detail like primary resistance or other numeric specs, and it appears to include coils only – spark plug replacement is not part of this bundle.

Who It’s For

I’d recommend this if your primary need is replacing all eight coils and you already plan to leave plugs alone for now (or you’ve confirmed your plugs are still healthy).

It makes sense for routine maintenance on older HEMI vehicles where the right interchange family matters more than chasing the newest listing. The one-year replacement language adds some confidence, but only if your fitment checks out.

Package Content	8 ignition coils + 16 pre-gapped iridium spark plugs
Recommended Torque	25-30 N·m (18.44-22.13 ft·lb)
Coil Construction	Epoxy-potted, heat-resistant coils (as claimed)
Warranty	2-year warranty + lifetime technical support

What We Found

Autoexact’s kit is a full 8-coil and 16-spark-plug bundle for 5.7 Hemi applications, and it explicitly leads with fitment-first guidance – confirm your year, make, engine, and OE number. The coils are described as epoxy-potted and heat-resistant, and the listing claims coils are tested before packaging for consistency.

Installation guidance includes a recommended spark plug torque of 25-30 N·m and notes factory pre-lubricated green dielectric grease, which should make the DIY swap cleaner and reduce dry-start installation friction. It also ties likely issues like misfire and rough idle to worn coils and plugs and references DTCs P0300-P0308.

A strong point is the warranty coverage and lifetime technical support, but the listing still doesn’t include numeric coil electrical specs such as primary resistance or voltage measurements in the key features.

Who It’s For

I would point this toward drivers who want one coordinated ignition fix – coils and plugs together – so they’re not diagnosing the same symptom twice. It’s especially relevant when the vehicle is showing misfire-like behavior, hesitation, or hard starting and you suspect more than just the coils.

The pre-greased install approach is also a small but meaningful quality-of-life feature for DIYers, and the bundle makes more sense if your plugs are already due.

Package Contents	8 coil packs + 16 iridium spark plugs
Recommended Spark Plug Torque	18.44-22.13 ft·lb (25-30 N·m)
Coil Build Claim	Epoxy-potted, heat-resistant coils
Plug Build Claim	Pre-gapped fine-wire iridium plugs

What We Found

This Autoexact listing also bundles 8 ignition coils with 16 pre-gapped iridium spark plugs for UF504 5.7 Hemi applications. The key claims focus on restoring ignition performance, reducing misfires, and using direct OEM replacement and plug-and-play installation.

Like the other Autoexact option, it calls out factory pre-lubricated green dielectric grease and includes installation torque guidance again (18.44-22.13 ft·lb). It also references common diagnostic triggers like P0300-P0308 and highlights spark plug life messaging (up to 40,000 miles) along with coil durability claims such as epoxy-potted, heat-resistant construction.

Compatibility coverage includes a range of Ram/Durango/Charger/Challenger/Grand Cherokee/Wagoneer models. The weak spot is still the absence of measurable coil electrical specs, and Prime availability and rating details aren’t shown here.

Who It’s For

I’d shortlist this if you want smoother daily drivability after ignition component wear and you’d rather install a matched coil + iridium plug set instead of tracking down parts one at a time.

It also helps when you’re worried about misfire recurrence – because neglected plugs can keep the problem alive even after you swap coils. The kit becomes a smarter buy when the check-engine light and inconsistent starts suggest both components may be aging out.

Replacement Part Numbers	UF504, C1526, 5C1569, E1004 (listed)
Installation	Direct plug-and-play, no reprogramming
Coil Construction Claim	Highly conductive copper wire + high dielectric epoxy
Lifespan Claim	Up to 100,000 miles (as stated)

What We Found

The LCWRGS-branded set positions itself as OEM-grade performance with copper wire and epoxy dielectric material claims. It lists replacements for UF504 and common interchange numbers like C1526, 5C1569, and E1004 – so it’s trying to line up with the familiar 5.7 Hemi coil family shoppers often search for.

The listing includes a lifespan claim up to 100,000 miles and talks about enhanced coils using copper windings and epoxy dielectric performance. It also suggests an upgrade-style energy comparison to OE and includes engine performance restoration language. Installation is described as direct plug-and-play with no reprogramming or modifications.

Fitment is aimed at 2006-2019 Ram 1500/2500 and Charger/Durango/Grand Cherokee/Chrysler 300 with 5.7 V8 HEMI. The drawback is that it still doesn’t provide numeric electrical specs (like primary resistance), and no clear warranty term appears in the key features.

Who It’s For

I’d consider this for higher-mileage owners who want to replace all eight coils at once and plan for longer-term ownership. It’s also a fit if you prefer an OEM-style install experience and want to avoid hunting for multiple brands or partial sets.

The 100,000-mile lifespan claim is the value hook for people looking to reduce repeat repairs, assuming your OE number matches. It’s best when you’re comfortable keeping spark plugs as-is because this is coil-only.

Package Content	Set of 8 ignition coils
Interchange Part Numbers	UF-378, UF505, IC508, IC585, UF-505, UF428 (listed)
Warranty	2-year warranty
Target Failures	Misfire, rough idle, power loss, poor fuel economy (as stated)

What We Found

NPAUTO’s 8-pack is aimed at early-2000s 5.7L V8 HEMI models and lists compatibility for 2003-2005 Dodge Ram 1500/2500/3500 plus select Durango and Chrysler 300 applications.

The listing includes interchange guidance for UF-378 and other UF-505/UF-428 style numbers, and it frames the coil change around addressing common symptoms like misfire, rough idle, power loss, and poor fuel economy.

Warranty coverage is listed as a 2-year warranty, which is a stronger safety net than many minimal coil options.

The important catch here is that this fitment is UF378-family oriented rather than UF504-focused, which is why it matters in a “best coil packs for 5.7 hemi” roundup – some buyers expect UF504, but this option may not match that requirement.

Who It’s For

I would only use this if your factory coils align with the UF378 (or the interchange family shown), not UF504. It’s best for older applications where confirming the cross-reference family is the difference between a perfect install and the wrong coil type.

The 2-year warranty makes it more reassuring for long-term ownership plans, but you still don’t want to assume “5.7 Hemi” automatically means “UF504.”

Replacement OEM Numbers	UF504, UF-504, 5C1569, E1004, 52-1828, 56029129AA/AB/AF, 68060346AA, IC584, C1526 (listed)
Coil Materials	Copper windings + ceramic insulator (as stated)
Output Claim	Stable high-voltage output for consistent spark
Package Content	Set of 8 ignition coil packs

What We Found

This listing offers 8 ignition coil packs and repeats extensive compatibility coverage for Dodge, Chrysler, Jeep, and Ram models tied to 5.7L and nearby HEMI displacements, with UF504 called out as a replacement number. It also references common equivalents like UF-504 and additional interchange identifiers.

For construction, it describes durable copper windings and a robust ceramic insulator, which is meant to support heat resistance under engine conditions. The performance angle centers on stable high-voltage output for consistent spark and improved combustion, along with restoration-style language for engine power.

Installation is described as direct OEM design without modifications. The main limitation is the same as others: no measured electrical specs (like primary resistance) and no explicit warranty duration called out clearly in the key features.

Who It’s For

I’d shortlist this for UF504 owners who want eight coils for a full replacement job and prefer to solve misfire symptoms by swapping the entire coil set at once. It suits DIYers who want an OEM-style install and daily-driver durability, particularly given the ceramic insulator and copper winding claims.

Value is strongest when your plan is to replace all eight coils together rather than piecemeal.

Voltage	12V
Terminal Quantity	3
Mount Type	Bolt On
Primary Resistance	0.77 ohms

What We Found

A-Premium sells an 8-pack of ignition coils with 5.7L V8 HEMI coverage listed from 2005 through 2024 across Chrysler, Dodge, Jeep, and Ram. The fitment section is detailed and includes multiple reference numbers including UF504.

The biggest strength is the spec clarity: it lists terminal quantity as 3, mount type as bolt-on, and primary resistance at 0.77 ohms, along with terminal type as blade and voltage at 12V.

That kind of electrical detail generally makes it easier to feel confident the coils match expected OEM electrical behavior rather than relying only on marketing copy. This listing does not include spark plugs (so it’s coil-only). Prime availability and ratings aren’t provided here, but the electrical spec transparency reduces uncertainty.

Who It’s For

I’d recommend this for shoppers who want measurable electrical spec transparency when buying UF504-compatible coils. It’s a good fit for daily drivers replacing all eight coils to address misfire, rough idle, and check-engine illumination.

The bolt-on mounting information also helps with planning – both for DIY and for shop work – since you know what kind of install expectation to prepare for. It’s also a strong “compare against OEM” option because the presence of primary resistance information is the difference-maker versus spec-light listings.

What to Look For Before Buying

When I shop for the best coil packs for a 5.7 Hemi, I start with the OE coil number (or the UF interchange family your vehicle actually uses), not just “5.7 Hemi” by itself. Fitment tables can overlap across model years and even across different HEMI displacements, so double-check the year, engine details, and any exceptions listed by the seller. From there, I look for spec transparency – especially electrical details like primary resistance – and for construction or weatherproofing notes that suggest the coils are built to handle heat and daily conditions. Warranty length is the last piece I weigh, because ignition problems tend to repeat quickly when a replacement is just barely adequate.

Check Match the OE coil number, not just the engine

Start with the exact OE coil number on your existing coils (or the part number from your receipt). Make sure the listing’s UF504 match (or the interchange family it references) lines up with your specific year/engine – because compatibility charts can cover multiple HEMI setups and still include exceptions. If anything looks even slightly ambiguous, I’d ask the seller to confirm before ordering.

Value Decide between coil-only or coil-and-plug bundles

Decide if you want coil-only or a coil-and-plug bundle. Coil-only makes sense if your spark plugs look good and you’re just correcting the coil issue. Bundles can save time and reduce repeat work, especially when misfire codes and symptoms point to both worn coils and aging plugs. If plugs are included, check that they’re pre-gapped and what type they are (iridium vs. other options), since that affects install convenience and what you’re truly replacing.

Rating Prioritize spec transparency and consistent performance claims

I’d prioritize listings that show real electrical specs – like primary resistance, terminal details, and voltage – because that’s what helps confirm you’re matching OEM behavior. If a page only says things like “more energy” or “peak performance” without numbers, I treat it as marketing until proven otherwise. Also look for practical install guidance (like torque notes) and any construction/heat/weatherproof claims that match how you drive.

Verify Confirm warranty coverage and installation expectations

Warranty matters more for ignition parts than people think. I’d look for a clear warranty term and make sure the listing supports direct bolt-on installation – especially if you’re DIYing. If plugs are included, confirm the torque guidance and whether the listing mentions dielectric grease or other prep steps. And if you’re replacing one bad coil, my preference is to replace the full set when possible to keep cylinder ignition consistent.

Frequently Asked Questions

Are UF504 ignition coils compatible with all 5.7 Hemi years?

UF504 coils often cover many 5.7 Hemi applications, but overlap with similar interchange families means it’s not automatically “all years.” Fitment can change by model year, configuration, and any exceptions listed by the seller. I’d verify using your OE coil number (or the exact interchange family shown for your year/engine). If you’re unsure, confirm with the seller using your VIN or OE part number.

Should spark plugs be replaced when installing new 5.7 Hemi coils?

I’d usually replace coils and spark plugs together when you’re doing coil replacement on a 5.7 Hemi, because worn plugs can keep misfires coming back even after the coils are new. Many coil failures show up alongside aging ignition components, and a bundle reduces repeat labor and repeat diagnosis. If your plugs are known to be in good shape and within service life, coil-only can work – but you’ll want clean installation and correct torque.

What symptoms indicate failing coil packs on a 5.7 Hemi?

Failing coil packs commonly show up as misfires, rough idle, hesitation under load, and hard starting. Many vehicles also trigger check-engine lights with codes like P0300 through P0308. You may notice uneven vibration at idle, too – often tied to a cylinder-specific ignition issue. A scan helps confirm whether it’s the coils, plugs, or another system causing the codes.

How important are electrical specs like primary resistance?

Electrical specs are important because they help ensure the replacement coil behaves like the OE part your ignition system expects. Primary resistance, terminal type, and voltage are the most relevant details in coil listings. When those numbers are provided, it’s easier to shop with confidence. If a listing doesn’t include electrical specs, I’d rely more heavily on correct OE matching and warranty/return coverage.

What is the recommended installation approach for coil pack replacement?

Follow the listing’s bolt-on/install instructions and replace all eight coils as a set when the kit is sold for a complete replacement. If a bundle includes spark plugs, use the torque guidance from the listing and include any recommended prep like dielectric grease when specified. After install, clear codes and monitor for repeat misfires so you can confirm the issue is fully resolved.

🎯 Final Verdict

If you want the most confidence-inspiring choice for a UF504-compatible 5.7 Hemi, A-Premium is my top pick because it clearly lists electrical specs – including 0.77-ohm primary resistance – along with bolt-on mounting and 12V operation. My best alternative is Autoexact’s coil-and-iridium plug bundle, since it helps reduce repeat labor when plugs may be aging alongside the coils. Either way: confirm the OE coil number first, then buy the set that matches it.