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Heavy Duty Truck Spark Plugs MAN / DENSO GK3-5 NGK IFR7U4D

Heavy Duty Truck Spark Plugs MAN / DENSO GK3-5 NGK IFR7U4D

industrial spark plugs

ignition spark plug

Place of Origin:


Brand Name:


Model Number:

R3K15-78 IFR7U4D

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Product Details
Apply For:
Fit For:
Electrode Type:
J Type
20.6 Mm
19 Mm
Payment & Shipping Terms
Minimum Order Quantity
Packaging Details
Original Tin, Plastic box, Carton
Delivery Time
35 working days
Payment Terms
L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability
30000pcs per month
Product Description
Heavy Duty Truck Spark Plugs MAN / DENSO GK3-5 NGK IFR7U4D

Genuine DENSO industrial spark plug type GK3-5 for use in various gas engines such as Scania - MAN - Perkins and 2G angenitor others.
With the IRIDIUM SAVER, IRIDIUM SAVER DDI and IRIDIUM SAVER PERFORMER provides Denso industrial spark plugs with high efficiency. The DENSO Iridium Saver spark plugs offer high performance, long life and reliability even in lean-burn systems.
Minimum order quantity is 24 pcs.
Packaging units:
1 pcs / 4 pcs / 96 pcs (big box)
Spark plug Denso Iridium Saver GK3-5 # 6104
Brand : DENSO
M14x1,25 , SW 16 mm , Iridium Saver DDI
Tariff No .: 8511 10 00
We recommend that before every installation and replacement of the spark plug the gap is to set to 0.30 mm.
In addition, please always use at every reassembly necessarily new spark plug sealing rings!
The matching ignition lead cables we do also offer! Just give us a call or send an inquiry 


RC78PYP21 / RC78PYP25
CHAMPION Premium: RC78WP / RC78WYP11 / RC78WP15
Gateway: 2178315
BOSCH: 7321
CUMMINS: 4089085 / 4089086 / 4025416
agrogen Agrikomp
Perkins Motor G4-203, G4-236, 900 Serie
37042-00010 / 3704200010 / 37042 00010
Scania 500-011702
51259230051 / 51.25923-0051
PlanET 10010656
Emission Parts Partner 00150 EP150

All TAKUMI spark plugs are 100% pre-fired to assure the highest quality possible.
Copper glass seal bonds the center electrode and insulator together for a gas-tight seal. Maintains proper heat and excludes hot combustion gases.
Purified Alumina Powder Insulator provides exceptional dielectric strength and thermal conductivity allowing the material to stand up to extreme stress.

TAKUMI Group is one of the best manufacturers of industrial spark plug for genset engines all over the world. TAKUMI has made a huge contribution to energy company, service company and engine spare parts company. TAKUMI spark plugs offer the extended life that is essential for many industrial appliions that requires spark plug to endure thousands of ohurs of use in very hostile, highly stressed enviroments. The high quality of our product is the same as famous brands all over the world. While price is more competitive.
Competitive Advantages
1. Prouducts are enjoying great reputation for its diversifiion, innovation and superior quality.
2. Releasing new items periodically and customizing products to OEM quality.
3. Excellent service and Durable use of products.
4. Strict quality control.
5. Preparing goods withing 5-10 days after order confirmed, if big order, we need 30 days get ready.
6. Trial order is acceptable with small quantity.
7. We also are supplying the parts for Toyota, Honda, Nissan, Mitsubishi Mazda etc. of brake pad.
How to Read Your Spark Plugs
Is your engine running too lean? Too rich? Is there an issue with oil control or ignition timing? Or is everything just fine with your engine? Like the mechanical version of the Magic 8-Ball, your spark plugs may have the answers for you. The trick is learning how to read your spark plugs.
With help from the spark plug experts at Beyond First Auto, we’ll teach you how to diagnose minor tuning issues or potentially major engine problems by examining your spark plugs. Check out the images below, courtesy of Spark Plugs, and get ready to do a little light reading the next time you pull your spark plugs.
Appearance: A light tan/gray or brownish color, along with very little electrode erosion, indies optimal operation conditions, including a healthy engine and correct spark plug heat range.
Appearance & Symptoms: The electrodes—center and ground—are covered in an ashy coating. As a result of this masking of the electrodes, your engine may experience a misfire. This build-up of combustion deposits can eventually (but not usually) fill in the space between the two electrodes.
Possible Causes: Oil leaks, poor fuel quality.
Wet and Dry Fouling
Appearance & Symptoms: Dry fouling (top) appears as sooty, black build-up. Wet fouling (bottom) has a wet, sometimes oily appearance. Both conditions can create poor starting and misfiring.
Possible Causes: Depending on whether the spark plug is coated in oil or fuel, wet fouling can be symptomatic of a compromised head gasket, poor control from your pistons’ oil control ring, valvetrain problems, or an extremely rich condition. Dry fouling, or carbon fouling, is often caused by an overly rich condition, and the problem may lie with your air cleaner (clogged) or carburetor. Other possible causes could be low compression, vacuum leak, overly retarded timing, or improper spark plug heat range.
Lead Fouling
Appearance & Symptoms: Lead fouling can only occur in appliions that use leaded gasoline, such as racing engines. Lead fouling generally shows up as yellowish brown deposits on the spark plug’s insulator nose. Lead fouling can cause your engine to misfire only at high-rpm and under hard acceleration.
Possible Causes: This condition commonly occurs when gasoline contains too much lead; however, because spark plugs are changed frequently in racing appliions, lead fouling has become less common.

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