Keep your Cummins ISB5.9G, ISC8.3, or L9N engine running at peak performance with this reliable Cummins spark plug replacement. Engineered to meet OEM specifications, these plugs ensure consistent ignition, reduced downtime, and smooth operation for your heavy machinery.
| Parameter | Details |
|---|---|
| Part Name | Spark Plug |
| Replacement Part Number | 4955850, 4937472, 5473010 |
| Compatible Engine Brand | CUMMINS |
| Engine Number | ISB5.9G CM2180, C Gas Plus CM556, ISL G CM2180, L Gas Plus CM556, QSL9 G CM558, ISC8.3 G CM2180 C101, C8.3 G, L9N CM2380 L124B, ISC8.3 G CM2180 |
| Condition | New Aftermarket |
| Warranty | 3-12 months against manufacturing defects |
| Brand | Applicable Models |
|---|---|
| CUMMINS | ISB5.9G, ISC8.3, L9N, C8.3, ISL, QSL9 |
Construction equipment downtime costs $800-$3,000 daily. Faulty spark plugs cause misfires, reduced fuel efficiency, and unexpected breakdowns. Waiting 2-4 weeks for OEM parts or risking counterfeit replacements that fail prematurely only worsens the problem. When your Cummins ISB5.9G or ISC8.3 engine needs new spark plugs, you need a solution that combines quality, availability, and technical accuracy.
Our Cummins spark plug replacements (4955850, 4937472, 5473010) solve these challenges with ISO-certified manufacturing and rigorous pre-shipment testing. As a 10-year industry supplier with 20+ engineering experts, we ensure each spark plug meets OEM specifications for heat range, electrode gap, and conductivity. Whether you're maintaining a fleet of excavators or repairing a single L9N engine, our Guangzhou warehouse stocks these critical parts for 2-5 day delivery—no minimum order required.
These spark plugs deliver reliable ignition in the harshest operating environments—from construction sites in Southeast Asia to mining operations in Africa. Designed for Cummins gas engines including ISB5.9G and ISC8.3, they withstand extreme temperatures and vibration, ensuring consistent performance in heavy machinery like excavators, loaders, and generators. Proper spark plug function is critical for engine starting, fuel combustion efficiency, and emissions control—making the right replacement essential for minimizing operational costs.
Each spark plug features precision-machined electrodes for optimal spark propagation, ensuring complete fuel combustion and reducing carbon buildup. The ceramic insulator provides superior heat resistance (up to 1200°C), preventing pre-ignition in high-compression engines. Thread accuracy within 0.01mm guarantees perfect fitment, eliminating cross-threading risks during installation. Our strict material selection—including nickel-plated shells and copper core electrodes—ensures 15,000+ hours of service life, matching OEM durability at a fraction of the cost.
Counterfeit spark plugs may cost 30% less upfront but fail 1.5x faster, causing secondary damage to ignition coils and cylinder heads. A single engine misfire can lead to $2,000+ in repairs and 3+ days of downtime. Our OEM-equivalent spark plugs meet ISO 9001 quality standards, reducing replacement frequency and preventing costly collateral damage. By focusing on total cost of ownership rather than initial price, you save $1,200+ annually per machine in maintenance and downtime expenses.
We source exclusively from ISO 9001-certified factories and conduct three-tier quality checks: incoming material inspection, dimensional accuracy testing, and performance validation under simulated engine conditions. Our 3-12 month warranty covers manufacturing defects, with a dedicated technical team available 24/7 to verify part compatibility within 2 hours. With over 10,000+ parts in stock and 10 years of export experience, we've earned the trust of construction companies, repair centers, and equipment fleets worldwide.
Don't let a simple spark plug issue stop your equipment. Send us your engine model, required quantity, and destination for a competitive quote within 24 hours. First-time clients can request sample testing to verify quality before placing bulk orders. With our ready inventory and global logistics network, we'll have your spark plugs delivered when you need them—so your machinery stays operational and profitable.
Q: Are these OEM parts or aftermarket replacements?
A: These are OEM-equivalent aftermarket spark plugs manufactured in ISO 9001-certified facilities, meeting the same performance standards as original Cummins parts.
Q: How can I confirm compatibility with my engine?
A: Provide your engine model number and existing spark plug part number. Our technical team will verify compatibility within 2 hours.
Q: What is the warranty coverage?
A: We offer a 3-12 month warranty against manufacturing defects. Defective parts will be replaced at no cost.
Q: What is the minimum order quantity?
A: We accept orders for 1 piece, ideal for emergency repairs or testing.
Q: How long does shipping take?
A: In-stock items ship within 2-5 working days. Express delivery takes 3-5 days, air freight 7-10 days, and sea freight 25-35 days depending on destination.
Q: Can I request samples before placing a large order?
A: Yes, first-time clients can order sample spark plugs to verify quality and compatibility before bulk purchases.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 13316055942 | Email: talos@xunpojx.com
Not sure if this part fits your machine? Send us your machine model number and serial number via WhatsApp or email -- our specialists will verify compatibility within 2 hours.
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