Use Coupon Code "Geekstop" To Save Another 5%

Collapsible content
Description
This listing includes 4 spark plugs.
The patented DENSO Iridium Long Life Spark Plug is the first automotive plug to utilize iridium and is fast becoming the standard for modern high-tech engines. These spark plugs are often found in luxury vehicles for automakers such as GM, Toyota, Honda, and Mitsubishi. Employing a revolutionary new 360-degree laser-welding process, DENSO has created a spark plug unlike anything on the market today. With this in mind, if your vehicle exhibits bad spark plug symptoms including slow acceleration, poor fuel economy, or engine misfires, consider DENSO for your performance spark plug replacement. Trust in the iridium-spark-plug pioneer to provide spark plugs that showcase unmatched functionality, reliability, and fitment.
ENHANCE PERFORMANCE: the Iridium Long Life design with its 360-degree laser weld is designed for durability under the most extreme conditions. The iridium alloy is six times harder and eight times stronger than conventional platinum and can handle the temperatures over 4,000 degrees Fahrenheit associated with high-performance ignition and special fuel systems such as turbo, supercharger, and nitrous systems
MAXIMIZE SERVICE LIFE: the Iridium Long Life Spark Plug sustains spark performance for over 100,000 miles
OPT FOR FASTER STARTS: the DENSO Iridium Long Life Spark Plug has a smaller center electrode, which dramatically improves ignitability for better conservation of fuel, more power, fewer misfires under heavy loads, and faster, easier starts
FIGHT CORROSION: the DENSO Iridium Long Life design, which resists corrosion even in the harshest environments, delivers sustained spark performance and lasts up to three times as long as conventional plugs
SAVE ON FUEL: the Iridium Long Life Spark Plug design has a tapered cut to reduce quenching and improve firing performance for more efficient emission gas purification and fuel consumption
Confirm Your Vehicle Compatibility
1995 Pontiac Sunfire 2.3L L4
Warranty & Returns
Geekstop Limited Warranty
Clear, year-based coverage and a simple claim process—buy with confidence.
Brake Rotors / Drums
Material & workmanship coverage with proper bedding/torque.
Wheel Hub & Bearing Assemblies
Coverage requires correct torque/alignment; impact damage excluded.
Suspension & Control Arms
Ball joints/tie rods/control arms under normal, listed use.
Coverage by Part Category
| Category | Warranty | Notes |
|---|---|---|
| Brake Rotors / Drums | 10 Year Warranty | Material & workmanship; thermal cracking excluded if outside bedding/torque specs. |
| Wheel Hub & Bearing Assemblies | 10 Year Warranty | Proper torque & alignment required; press/impact damage excluded. |
| Control Arms / Ball Joints / Tie Rods | 10 Year Warranty | Boot tears from road impact and altered parts are excluded. |
| Ceramic / Semi-Metallic Brake Pads | Workmanship 90 Days | Friction wear is consumable and not covered; noise/dust vary by use. |
| Struts / Shocks | 10 Year Warranty | Leaks due to physical damage or overload are excluded. |
Coverage applies to the original retail purchaser and is non-transferable. Commercial/fleet use requires written approval on the order.
What’s Covered
- Manufacturing defects in materials or workmanship
- Premature failure under normal, listed use
- Fitment issues for the advertised application
- Replacement of the defective part(s) after inspection
- Return shipping on approved claims
What’s Not Covered
- Normal wear items (pads/shoes/filters)
- Improper installation, missing bedding or torque to spec
- Racing/off-road/overload, accident or impact damage
- Corrosion from chemicals/road salt, environmental exposure
- Modified parts, misuse, or no proof of purchase
How to File a Warranty Claim
1) Start a Claim
2) Provide Documentation
3) Return Authorization (RMA)
4) Inspection & Resolution
Contact Warranty Support