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Top End Rebuild Gasket Set for Nissan KA24DE 240SX and Altima with 90mm Bore at .045" Head Gasket Thickness
The Cometic gasket kit for the Nissan KA24DE engine in 1995-1998 applications, built around Cometic's Multi-Layer Steel head gasket at a 90mm bore and .045 inch compressed thickness. The PRO2013T-045 kit covers the full top end gasket set for the KA24DE found in the 1995-1998 Nissan 240SX S14 and the 1995-1997 Nissan Altima, supplying all the gaskets required for a complete top end rebuild or head removal service in a single matched kit.
Cometic's MLS head gasket in the CGSPRO2013T-045 uses embossed stainless steel layers with fire ring technology for a consistent, repeatable cylinder seal on both stock and mildly built KA24DE long blocks. The 90mm bore in the PRO2013T-045 matches the factory KA24DE bore size, making it a direct-fit top end gasket solution for stock bore 240SX and Altima builds.
Key Features
- Cometic CGSPRO2013T-045 top end gasket kit for 1995-1998 Nissan KA24DE in 240SX S14 and Altima
- Cometic MLS (Multi-Layer Steel) head gasket at 90mm bore and .045 inch compressed thickness for stock bore KA24DE applications
- Full top end coverage: head gasket, intake manifold gasket, exhaust manifold gasket, valve cover gasket set, throttle body gasket, thermostat gasket, coolant outlet gasket, and associated seals
- PRO2013T-045 stainless embossed MLS head gasket uses fire ring design for reliable cylinder sealing on stock and mildly built KA24DE blocks
- Replaces all factory OEM gaskets that are disturbed during a KA24DE top end or head gasket service
- California Prop 65 warning applies
Fitment
| Year Range | Make | Model |
|---|---|---|
| 1995-1998 | Nissan | 240SX |
| 1995-1997 | Nissan | Altima |
Specifications
| Detail | Value |
|---|---|
| Part Number (MPN) | PRO2013T-045 |
| Brand | Cometic Gasket |
| Engine | Nissan KA24DE |
| Head Gasket Type | MLS (Multi-Layer Steel) |
| Bore | 90mm |
| Head Gasket Thickness | .045 inch (compressed) |
| Fitment | 1995-1998 Nissan 240SX, 1995-1997 Nissan Altima (KA24DE) |
| Prop 65 | Yes |
| UPC | N/A |
What's Included
- Cometic MLS head gasket (90mm bore, .045" thickness)
- Intake manifold gasket
- Exhaust manifold gasket
- Valve cover gasket set
- Throttle body gasket
- Thermostat gasket
- Coolant outlet gasket
- Air intake gasket
- Associated seals for top end assembly
About Cometic Gasket
Cometic Gasket is a Cleveland, Ohio-based manufacturer of performance gaskets and sealing solutions for racing and high-performance street applications across automotive, motorcycle, and powersports platforms. Cometic supplies MLS head gaskets, cam cover gaskets, and full rebuild kits for a wide range of import and domestic engines, and is a preferred supplier for engine builders who require precise bore sizing and consistent thickness tolerances beyond what standard OEM replacement gaskets offer.
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Frequently Asked Questions
What is the Cometic CGSPRO2013T-045 top end gasket kit?
The Cometic CGSPRO2013T-045 is a top end gasket kit for the 1995-1998 Nissan KA24DE engine, used in the 240SX S14 and 1995-1997 Altima. The PRO2013T-045 is built around a Cometic MLS Multi-Layer Steel head gasket at 90mm bore and .045 inch thickness, and includes all gaskets needed for a complete KA24DE top end rebuild: head gasket, intake and exhaust manifold gaskets, valve cover gaskets, throttle body gasket, thermostat gasket, coolant outlet gasket, and related seals.
Does the Cometic PRO2013T-045 fit the 1991-1994 Nissan 240SX S13 with the KA24DE?
The PRO2013T-045 is specified for the 1995-1998 KA24DE applications. While the S13 240SX (1991-1994) also used the KA24DE in RWD configuration, the PRO2013T-045 is listed for 1995-1998 fitment. Verify the exact Cometic part number against your specific engine build year before ordering, as head and manifold gasket configurations can differ between S13 and S14 KA24DE applications.
What bore size does the Cometic CGSPRO2013T-045 head gasket support?
The PRO2013T-045 MLS head gasket is sized at a 90mm bore, which matches the factory KA24DE cylinder bore diameter in stock configuration. This makes the CGSPRO2013T-045 a direct-fit option for stock bore 240SX S14 and Altima KA24DE builds without requiring any block boring or overbore accommodation.
What is the compressed thickness of the head gasket in the PRO2013T-045 kit?
The Cometic PRO2013T-045 head gasket is .045 inch (approximately 1.14mm) in compressed thickness. This is Cometic's standard MLS thickness for the KA24DE and is designed to work with factory deck height and stock or mildly resurfaced cylinder heads. If the head has been significantly resurfaced or the block decked, verify that the .045 inch gasket maintains the correct combustion chamber volume and squish clearance for your build.
Does the Cometic PRO2013T-045 include the head bolts or head studs?
No. The CGSPRO2013T-045 kit is a gasket set only and does not include head bolts, head studs, or head bolt washers. For KA24DE head stud upgrades, a separate ARP head stud kit is recommended. EBC also recommends replacing head bolts whenever the head is removed on a KA24DE, as the factory head bolts are torque-to-yield fasteners that should not be reused after a torque-to-yield installation sequence.
Is the Cometic CGSPRO2013T-045 suitable for a turbocharged KA24DE build?
The Cometic PRO2013T-045 MLS head gasket is a Multi-Layer Steel design with fire ring sealing technology, which is more resilient than standard OEM composite gaskets and is used in both naturally aspirated and mildly boosted engine builds. For high-boost KA24DET applications or builds pushing significant cylinder pressure, a thicker or higher-ring-count MLS gasket may be more appropriate depending on the build specifications. Consult your engine builder or Cometic directly for application guidance on boosted builds above 15 psi.
How does the Cometic MLS head gasket in the PRO2013T-045 differ from an OEM Nissan KA24DE head gasket?
The Cometic PRO2013T-045 MLS head gasket uses multiple embossed stainless steel layers with a fire ring design, compared to the OEM KA24DE composite head gasket. The MLS design offers better sealing consistency on surfaces with minor imperfections, more reliable re-sealing after head removal, and greater resistance to combustion blow-through at higher cylinder pressures. The Cometic gasket also allows more precise bore sizing and thickness selection compared to fixed OEM dimensions.
Is the Cometic PRO2013T-045 a California Prop 65-listed product?
Yes. Like most engine gasket and sealing products, the Cometic CGSPRO2013T-045 is subject to California Proposition 65 requirements due to materials in the gasket construction that are known to the State of California to cause cancer or reproductive harm. See the Prop 65 warning below for details. For more information visit www.P65Warnings.ca.gov.
Installation Instructions
- Drain the coolant and remove the intake manifold, exhaust manifold, valve cover, and all ancillary components obstructing KA24DE head removal.
- Remove the KA24DE cylinder head bolts in the reverse torque sequence specified in the Nissan FSM and lift the head from the block.
- Thoroughly clean the block deck and head mating surfaces with a plastic scraper and gasket solvent, removing all old gasket material without scratching the metal.
- Inspect the head for flatness using a precision straightedge; resurface at a machine shop if warpage exceeds Nissan specification.
- Verify the block deck is clean and dry, then place the new Cometic MLS head gasket (PRO2013T-045) over the cylinder bores and head bolt holes in the correct orientation.
- Lower the cylinder head onto the block over the MLS head gasket and install new head bolts or ARP head studs.
- Torque the head fasteners to the Nissan KA24DE specification (or ARP specification if using ARP studs) in the correct sequence, in multiple passes.
- Install the new valve cover gasket from the PRO2013T-045 kit and torque the valve cover bolts to specification.
- Install the new intake manifold, exhaust manifold, throttle body, thermostat, and coolant outlet gaskets from the kit during reassembly of those components.
- Refill coolant, check for leaks, and run the engine through multiple heat cycles before verifying proper sealing and returning to service.
WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.
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