8 Ignition Coils+ 8 Spark Plugs DG521/SP509 for Ford/Lincoln/Mercury

Name: 8 Ignition Coils+ 8 Spark Plugs DG521/SP509 for Ford/Lincoln/Mercury
Brand: SYKRSS
SKU: B0D3VB5SC3
Price: 66.98 USD
Availability: InStock

✅ In stock

Grade

💤 Not a Deal

24.91/100

Current Price

$60.28

Listed $66.98

Save $6.70 10% OFF

Analysis Confidence 55%

🏷️ Price includes Coupon savings

Check Deal at Amazon

Price verified Sep 21, 2026 7:23 PM · Prices & availability subject to change

Is This a Good Price on Amazon?

💤 Not a Deal

💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
💰The price is modestly below what this product ordinarily sells for.
🏷️The listed retail price is trimmed by 10% at checkout.
📉Better-priced windows have occurred before, though not frequently — today's price is reasonably competitive.
➡️Pricing has held fairly steady, with no strong push in either direction.

How We Scored This Deal

Price Competitiveness 7.65/28

Recent Value 2.81/22

Market Standing 5.45/20

Deal Strength 5/20

Momentum 4/10

📝 Product Overview

🏪 Sold by SYKRSS

📦 Fulfillment Fulfilled by Amazon

🚚 Shipping Free Shipping

Product Details

✓【 DIRECT FIT FOR MULTIPLE VEHICLE MODELS 】 This Ignition Coil Pack fits your 4.6L/5.4L V8 – for Ford (F-150 2008-2010 5.4L, Expedition 2008-2009 5.4L, Explorer Sport Trac 2008-2010 4.6L, Mustang 2008-2010 4.6L, F-250/F-350 Super Duty 2008-2010 6.8L V10, F-450/F-550 Super Duty 2015-2016 6.8L V10, and F53), for Lincoln Navigator 2008-2009 5.4L, and for Mercury Mountaineer 2008-2010 4.6L. Replace all 8 coils and plugs at once to stop misfires, rough idle, check-engine lights – restore lost power and throttle response.

✓【 OEM-PERFECT FIT WITH A TWIST 】 Precision-molded to meet OEM specs – no modifications, no splicing wires. Coils directly replace DG521, FD509, 8L3Z12029A, 5C1716, E509, IC697, C1659, GN10233, and more. Spark plugs directly replace SP509 (PZNAR6A11H). Spark plugs come pre-gapped – pull them out of the box and install immediately. Crucial Warning: Torque plugs to precisely 25–30 N·m (22 ft-lbs). Over-tightening will strip the shallow aluminum threads on these Ford modular V8 heads – strongly recommend using a torque wrench.

✓【 BUILT FOR UNDER-HOOD HELL 】 We didn't just copy the OEM; we upgraded the guts. Coils are wound with German-imported enameled copper wire and potted in Japanese epoxy resin to withstand extreme vibration. Silicone boots resist the brutal 105°C (peak 125°C) heat that cooks cheaper coils. Say goodbye to cracked boots leaving you stranded on the highway – these are tested from -40°C to survive Alaskan winters and Arizona summers.

✓【 WHY IRIDIUM? 】 The ultra-fine iridium electrode fires a concentrated, powerful Spark Plug even under heavy load – whether you're towing with your F-250 or hauling with your Expedition. The isostatic ceramic insulator prevents carbon tracking and flashover, ensuring consistent combustion for 60,000+ miles. Expect fewer fuel-wasting misfires, smoother idle, and noticeably quieter engine at highway speeds.

✓【 WE'VE GOT YOUR BACK – LITERALLY 】 Buying an ignition coils pack online can be risky – we get it. That’s why we back this kit with a 1‑Year No‑Questions‑Asked Replacement Promise (failed coil? we ship a new one ASAP – no hassle, no runaround). Before installation, send us your VIN or Year/Make/Model and we’ll double‑check fitment within 12 hours (avg. real reply: 6.2 hrs). We’ve verified over 2,001 vehicle builds – ask us first, then install your ignition coils pack with confidence.

⚙️ Specifications

Brand

SYKRSS

Vehicle Service Type

【 VEHICLE MODELS 】 This kit fits your 4.6L/5.4L V8 – for Ford (F-150 2008-2010 5.4L, Expedition 2008-2009 5.4L, Explorer Sport Trac 2008-2010 4.6L, Mustang 2008-2010 4.6L, F-250/F-350 Super Duty 2008-2010 6.8L V10, F-450/F-550 Super Duty 2015-2016 6.8L V10, and F53), for Lincoln Navigator 2008-2009 5.4L, and for Mercury Mountaineer 2008-2010 4.6L. Replace all 8 coils and plugs at once to stop misfires, rough idle, check-engine lights – restore lost power and throttle response.

Item Weight

1.95 kg

Connector Gender

Male

Installation Type

Coil Pack

Brand Name

SYKRSS

Manufacturer

SYKRSS

Included Components

Comes with housing