NGK® 3689 Spark Plug
Manufacturer #3689
NGK® 3689 Spark Plug
Manufacturer #3689
$17.64
$20.75
Save $3.11 (15%)
(178) In Stock
Get it between Fri, Aug 29 - Tue, Sep 02, 2025
Free & Fast Shipping
We ship fast so you can get on the road that much faster100% Safety
Only secure payments| SKU | NG3689 |
|---|---|
| Brand | NGK® |
| Part Name | Spark Plug |
| Part | # 3689 |
| Quantity Per Vehicle | 1 |
| Pack of | 1 |
| Condition | New |
| Manufacturer’s Warranty | 60 Days |
-
Aston Martin
-
Cadillac
-
Chevrolet
-
Ford
-
Lincoln
-
Mazda
-
Mercury
-
Pontiac
-
Rover
- TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
- NGK Iridium IX Spark Plug
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
- SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
- RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
| Short Style Spark Plug | No |
|---|---|
| Service Number | Tr6ix |
| Stock Number | 3689 |
| Part Number | Tr6ix |
| Resistance (82) | 5000.0 |
| Ground Electrode Tip Design | Taper cut |
| Ground Configuration | J-gap |
| Ground Electrode Core Material | Nickel |
| Washer Included | No |
| Grade Type | Performance |
| Electrical Terminal Type | Non-removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Pre-Gap Size (IN) | .040 |
| Pre-Gap Size (MM) | 1.0 |
| Ground Electrode Quantity | 1 |
| Hex Size | 5/8' (16mm) |
| Insulator Height (IN) | 2.07 |
| Insulator Height (MM) | 52.5 |
| Manufacturer Heat Range | 6 |
| Seat Type | Tapered |
| Reach (IN) | 0.689 |
| Reach (MM) | 17.5 |
| Thread Diameter (IN) | 0.551 |
| Thread Diameter (MM) | 14.0 |
| Insulator Material | Ceramic |
| Resistor Type | Yes |
| Skirt Length (IN) | 0.0 |
| Skirt Length (MM) | 0.0 |
| Ground Electrode Tip Material | Nickel |
| Skirt | No |
| Center Electrode Insulator Tip Projection (IN) | 0.16 |
| Center Electrode Insulator Tip Projection (MM) | 4.0 |
| Center Electrode Design | Fine wire |
| Center Electrode Projection | Mid projection |
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund.
Warranty Policy
Right parts, guaranteed. If you find any defects, simply notify us within the warranty period, and we’ll take care of it. Check out our Warranty Policy for more details.
Explore To More Items
for your 2007 GMC Envoy, Spark Plug
Similar Products
Recently Viewed
Mevotech®
Suspension Control Arm and Ball Joint Assembly
$95.18
$105.76
Save $10.58 (10%)
Get it by Fri, Aug 29 - Tue, Sep 02, 2025
Dynamic Fr...®
$238.83
$259.60
Save $20.77 (8%)
Get it by Fri, Aug 29 - Tue, Sep 02, 2025
Cardone®
$226.23
$245.90
Save $19.67 (8%)
Includes $55.80 Refundable Core Deposit
Get it by Fri, Aug 29 - Tue, Sep 02, 2025
Skyward®
Suspension Control Arm and Ball Joint Assembly
$48.41
$56.95
Save $8.54 (15%)
Get it by Fri, Aug 29 - Tue, Sep 02, 2025
Cardone®
$76.14
$84.60
Save $8.46 (10%)
Includes $4.81 Refundable Core Deposit
Get it by Fri, Aug 29 - Tue, Sep 02, 2025
Dynamic Fr...®
$96.38
$107.09
Save $10.71 (10%)
Get it by Fri, Aug 29 - Tue, Sep 02, 2025
Mevotech®
Suspension Stabilizer Bar Bushing Kit
$17.81
$20.95
Save $3.14 (15%)
Get it by Fri, Aug 29 - Tue, Sep 02, 2025
SKF-CHICAG...®
Wheel Bearing and Hub Assembly
$113.13
$125.70
Save $12.57 (10%)
Get it by Fri, Aug 29 - Tue, Sep 02, 2025
