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Brand: Cummins Inc.
Spare part 4011502 Single head gasket set (Cummins)
Description
The Cummins Single Head Gasket Set 4011502 4012662 is a OEM replacement designed for optimal performance and reliability in Cummins engines. This gasket set is an essential sealing component for the cylinder head, ensuring a secure and leak-free connection between the engine block and cylinder head. Crafted from high-quality materials, it is built to withstand extreme pressures and temperatures encountered in heavy-duty engine applications.
The Cummins Single Head Gasket Set 4011502 4012662 is engineered to meet strict OEM specifications, guaranteeing perfect fitment and compatibility. It helps maintain proper compression and prevents the leakage of coolant, oil, and combustion gases. This precision-made gasket set minimizes the risk of engine overheating, poor performance, and costly repairs, making it a vital maintenance part for long-term engine health.
This model, originally supplied under part number 4011502, has been superseded by part number 4012662. The updated version offers the same exceptional quality with possible improvements in durability and material composition. The gasket set is specifically designed for use in Cummins engines and is a key component when performing cylinder head repairs, rebuilds, or overhauls.
Weighing just 0.001 kg and measuring 2.5 × 2.5 × 2.5 cm, the kit is compact yet essential. It comes as a complete kit for the cylinder head, ensuring you have the required sealing components for the job. This part is most commonly used in maintenance schedules or during major engine repair work, where precise sealing and performance reliability are critical.
Choosing genuine Cummins parts like the Cummins Single Head Gasket Set 4011502 4012662 ensures your engine operates at peak efficiency. Aftermarket alternatives may compromise on fit or material quality, potentially leading to early failure or reduced performance. With this OEM gasket set, you can maintain the integrity of your engine’s design and performance standards.
Quotations for Cummins spare parts are available on request. Whether you are a maintenance engineer, fleet operator, or engine rebuilder, this gasket set delivers the dependability and precision you need for your Cummins-powered machinery.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Cummins |
| Part Number | 4011502 |
| Superseded By | 4012662 |
| Product Type | Single cylinder head gasket set (OEM) |
| Scope | Complete kit for the cylinder head |
Why Cylinder Head Gasket Sets Fail
Cylinder head gaskets are subjected to repeated thermal cycling, high combustion pressures, and constant exposure to coolant and oil, so even a OEM gasket set has a finite service life and is routinely replaced during scheduled cylinder head repairs, overhauls, or when a compression or coolant-leak fault is diagnosed. Common failure indicators that call for gasket replacement include visible coolant or oil weeping at the head-to-block joint, a persistent drop in compression on one or more cylinders, white exhaust smoke suggesting coolant intrusion into the combustion chamber, or coolant contamination visible in the engine oil. Replacing the full gasket set — rather than a single gasket in isolation — ensures every sealing surface disturbed during a head removal is renewed at the same time, avoiding a repeat teardown shortly after the first repair.
Installation Guidance
Correct installation of a cylinder head gasket set depends on clean, properly resurfaced mating faces on both the block and the cylinder head, correct torque sequence and torque values applied in the stages specified by Cummins’ service literature for the specific engine model, and use of the exact gasket set matched to that engine’s block and head configuration. Reusing an old gasket, substituting a generic aftermarket part not matched to the OEM specification, or skipping the correct torque sequence are the most common causes of early repeat failure after a head gasket job, which is why genuine, correctly identified OEM part numbers matter as much as the installation workmanship itself.
Why Genuine Cummins Parts
A genuine Cummins gasket set is manufactured to the exact material specification, thickness, and sealing-bead design validated for the engine platform it was designed for, which affects both the initial seal quality and how the gasket behaves under repeated heat-up and cool-down cycles over the engine’s working life. Because superseded and re-numbered part references are common across the Cummins parts catalog as designs are updated, confirming the correct current part number against the engine’s serial number and existing parts history is an important step before ordering, and Seven Star LLC can assist with that cross-reference as part of the quotation process.
Typical Applications
This gasket set is used wherever a Cummins engine of the corresponding platform undergoes cylinder head service — commonly on generator sets, marine and industrial power units, construction and material-handling equipment, and heavy-duty on-highway or off-highway vehicles running Cummins power. In Oman and across the GCC, where diesel gensets and heavy equipment operate for extended hours in high-ambient-temperature conditions, timely and correctly executed head gasket service is an important part of avoiding unplanned downtime, since cooling-system stress is generally higher in these operating conditions than in temperate climates, and gasket materials are worked harder across each thermal cycle.
Ordering Notes
Because this part has been superseded from 4011502 to 4012662, Seven Star LLC confirms the applicable part number against the customer’s engine serial number and any parts-list documentation before shipment, to avoid a mismatch between an older reference the customer may be using internally and the current genuine Cummins part actually required for their engine.
Why Seven Star LLC
Seven Star LLC supplies genuine Cummins spare parts, including cylinder head gasket sets, to fleet operators, maintenance workshops, and engine rebuilders across Oman and the wider GCC. With engineering support in Muscat, Seven Star LLC helps customers confirm the correct current part number for their specific engine model and serial range before ordering, avoiding the fit and reliability risks that come with an incorrect part.
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About brand
Cummins Inc. is an American maker of diesel and natural gas engines, generator sets and power systems. It was founded on 3 February 1919 in Columbus, Indiana, by mechanic Clessie Cummins with financial backing from banker William Glanton Irwin. The company was called Cummins Engine Company until 2001 and is still headquartered in Columbus, Indiana, and listed on the New York Stock Exchange.
Seven Star LLC lists Cummins diesel generator sets, generator-drive engines and engine and control spare parts, and supplies them to contractors and facility operators in Oman against the model, specification and part numbers on the equipment.
Cummins Inc. company profile
| Founded | 3 February 1919, Columbus, Indiana, USA |
|---|---|
| Founders | Clessie Cummins, with backing from banker William Glanton Irwin |
| Headquarters | Columbus, Indiana, USA |
| Ownership | Public company, New York Stock Exchange (CMI) |
| Group brands | STAMFORD and AvK alternators (Cummins Generator Technologies), Fleetguard filtration |
| Product families | Diesel and gas engines, standby and prime power generator sets, PowerCommand controllers, transfer switches, filters and spare parts |
Milestones
- 1919: Cummins Engine Company is founded in Columbus, Indiana.
- 1929: Clessie Cummins drives a diesel-powered Packard, presented as America's first diesel car.
- 1933: The Model H engine succeeds in railroad switchers.
- 2001: The company is renamed Cummins Inc.
Cummins equipment on this page
The generator sets listed are the C150D5 at 150 kVA, the C275D5 at 275 kVA, a set in the 312/315 kVA class and the C1000D5B at 1000 kVA. In the Cummins naming, the number after C is the nominal kVA rating and D5 marks a diesel set for 50 Hz. Generator-drive engines listed are the QST30-G4, QSK19-G4, QSX15-G8 and QSK60-G4, the last a 16-cylinder engine. Spare parts are listed by Cummins part number: head gasket set 4011502, starter motor 3283330, fuel injection pump 3937025 and the PowerCommand display and control assembly 300-6314-01.
Where Cummins generator sets are used
Standby power for hospitals, towers, data rooms and pumping stations; prime power on construction camps, remote oilfield sites and quarries; and paralleled sets for larger loads. High ambient temperature and dust are normal design conditions for sets working in the GCC, so cooling package and enclosure choices deserve attention at the inquiry stage.
Cummins Inc. products we list
Ordering Cummins parts: what we need
For engine parts send the engine serial number (ESN) and model from the engine dataplate, together with the part number if you have it. For generator set parts and controls send the genset model, specification letter and serial number from the set nameplate. For a complete set tell us the kVA rating and duty (standby or prime), voltage and frequency, open or enclosed build, the site ambient temperature and altitude, and the transfer switch or paralleling requirement.
Facts checked against published Cummins company histories, October 2026.
Browse Cummins Inc. products by category: Diesel Generator Spare Parts, Diesel Generator.
FAQ
Questions about the Spare part 4011502 Single head gasket set (Cummins)
Answers from our engineering team on installation, compatibility and integration.
01What is the Cummins 4011502 single head gasket set?
It is a complete single cylinder head gasket set for Cummins engines, used when the cylinder head is removed for repair, rebuild or overhaul.
02What is the difference between 4011502 and 4012662?
Part number 4011502 has been superseded by 4012662. Quote the newer number when ordering, or send both numbers with your enquiry.
03When should the head gasket set be replaced?
Head gaskets should be replaced whenever the cylinder head is removed, and during major engine overhauls, because used gaskets do not reliably seal again.
04How can I confirm it fits my engine?
Fitment depends on the engine model and serial number. Include the Cummins engine serial number (ESN) with your enquiry so the part number can be checked against your engine.
05Can Seven Star supply this Cummins part in Oman?
Seven Star LLC, an independent supplier in Muscat, quotes Cummins spare parts on request for generator and engine operators in Oman and the GCC. Send the part number and quantity through the inquiry form.
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