Genuine OEM Nissan Intake Rocker Cover Gasket – RB20 / RB25 / RB26 (Non-NEO) – 13270-58S11
Restore the factory oil seal on your Nissan RB-series engine with the Genuine OEM Nissan Intake Rocker Cover Gasket – 13270-58S11, a factory replacement gasket designed for selected RB20, RB25 and RB26 engines.
This genuine Nissan rubber gasket fits between the intake-side rocker cover (cam cover) and cylinder head, helping prevent engine oil from escaping around the cover's sealing surface.
Over time, repeated heat cycles, engine age and prolonged exposure to engine oil can cause original rocker cover gaskets to harden, shrink or lose their elasticity. As the gasket deteriorates, oil can begin leaking around the cam cover, leaving residue on the cylinder head and surrounding engine components.
Replacing a worn gasket with a genuine Nissan component helps restore the original sealing arrangement when installed correctly on clean, undamaged mating surfaces.
Whether you're repairing an oil leak on an RB25DET, refreshing an RB20DET or completing an RB26DETT engine rebuild, genuine Nissan rocker cover gaskets are an excellent choice for maintaining factory fitment.
Important: This listing includes one (1) intake-side rocker cover gasket only. The matching exhaust-side gasket, Nissan part number 13270-58S01, is sold separately.
Product Details
- Brand: Genuine OEM Nissan
- Part Number: 13270-58S11
- Product Type: Rocker Cover Gasket / Cam Cover Gasket
- Position: Intake / Inlet Side
- Engine Family: Nissan RB-Series
- Engine Type: Selected Non-NEO RB20, RB25 and RB26 Engines
- Material: OEM Rubber Sealing Gasket
- Quantity Supplied: One (1) Gasket
- Condition: Brand New – Genuine Nissan
Engine Compatibility
This gasket is intended for selected factory intake-side rocker cover arrangements on the following engines:
- Nissan RB20DE – Compatible Non-NEO Applications
- Nissan RB20DET – Compatible Applications
- Nissan RB25DE – Compatible Non-NEO Applications
- Nissan RB25DET – Compatible Non-NEO Applications
- Nissan RB26DETT – Compatible Applications
Important: This gasket is not intended for RB25 NEO rocker cover applications. RB25 NEO engines use different cam cover and gasket arrangements.
Compatibility must be confirmed against the engine's original rocker cover and Nissan part number, particularly where engines or cylinder heads have been swapped.
Vehicle Compatibility
Selected applications may include:
- Nissan Skyline R32 – Compatible RB-Series Engines
- Nissan Skyline R33 – Compatible RB-Series Engines
- Nissan Skyline R34 – Compatible Engine Configurations Only
- Nissan Skyline GT-R BNR32 – RB26DETT
- Nissan Skyline GT-R BCNR33 – RB26DETT
- Nissan Skyline GT-R BNR34 – RB26DETT
- Nissan Stagea WC34 – Selected Compatible Engines
- Nissan Laurel C34 / C35 – Selected Compatible Engines
- Nissan Cefiro A31 – Selected Compatible Engines
Fitment Warning: Vehicle model alone does not confirm compatibility. Some later Skyline, Stagea and Laurel models were fitted with NEO engines or different rocker cover arrangements.
Please confirm Nissan part number 13270-58S11 against your original gasket or the applicable Nissan factory parts catalogue before purchasing.
Intake & Exhaust Rocker Cover Gasket Guide
- Intake / Inlet Side: 13270-58S11 – This Listing
- Exhaust Side: 13270-58S01 – Sold Separately
Complete Rocker Cover Gasket Replacement: For compatible engines requiring both intake and exhaust rocker cover gaskets, order one (1) 13270-58S11 and one (1) 13270-58S01.
Additional sealing components, including bolt grommets, half-moon seals or specified sealant, may also be required depending on the engine and condition of the existing components.
Key Features & Benefits
- Genuine OEM Nissan replacement gasket
- Designed for selected RB20, RB25 and RB26 engines
- Intake-side rocker cover sealing position
- Factory-style rubber gasket construction
- Helps prevent engine oil leaks around the cam cover
- Replaces hardened, cracked or deteriorated original gaskets
- Designed to fit compatible factory rocker cover grooves
- Suitable for routine maintenance and engine rebuilds
- Ideal for Skyline GT-R and RB engine restorations
Why Do RB Rocker Cover Gaskets Leak?
Rocker cover gaskets are exposed to repeated engine heat cycles and continuous contact with engine oil.
As the rubber ages, it can lose flexibility and become less effective at sealing the joint between the rocker cover and cylinder head.
Common symptoms of a deteriorated gasket include:
- Visible oil residue around the rocker cover perimeter
- Oil collecting along the cylinder head
- Oil running down the side of the engine
- Burning oil smells when leaked oil contacts hot components
- Hardened, flattened or cracked original gasket material
- Oil leaks following rocker cover removal and reinstallation
Important: Oil leaks around an RB engine can also originate from half-moon seals, camshaft seals, breather connections or other sealing components. Inspect the source of the leak before replacing parts.
Restore the Factory Oil Seal
The rocker cover gasket creates a seal between the cam cover and cylinder head while allowing the cover to be removed for servicing.
When the original gasket becomes hardened or damaged, engine oil can escape through gaps in the sealing surface.
Installing a genuine Nissan replacement gasket helps restore the intended sealing arrangement, provided the rocker cover is correctly installed and the mating surfaces are in good condition.
For older RB engines, replacing both rocker cover gaskets during the same service can be worthwhile when both covers show signs of deterioration.
Ideal for RB Engine Maintenance & Restorations
This genuine Nissan intake rocker cover gasket is ideal for:
- RB20DET engine maintenance
- RB25DET non-NEO oil leak repairs
- RB26DETT Skyline GT-R servicing
- R32 and R33 Skyline engine bay restorations
- Rocker cover repainting or refinishing
- Camshaft and valvetrain maintenance
- Engine rebuilds and cylinder head servicing
- Replacing old gaskets after rocker cover removal
Installation Information
Before installation, confirm that the gasket matches the original intake-side rocker cover and engine configuration.
Remove the rocker cover following the applicable Nissan workshop procedure and carefully remove the old gasket.
Clean the gasket groove and cylinder head sealing surfaces, removing old gasket material, oil residue and any previously applied sealant without damaging the surfaces.
Inspect the rocker cover for cracks, distortion or damage that may affect sealing.
Fit the genuine Nissan replacement gasket into the appropriate rocker cover groove, ensuring it is seated correctly and has not become twisted or displaced.
Apply the correct sealant only at the locations specified by the relevant Nissan workshop manual.
Refit the rocker cover and tighten the retaining bolts in the specified sequence and to the correct torque.
After installation, run the engine and inspect the rocker cover perimeter for leaks.
Installation Tip: Avoid overtightening the rocker cover bolts. Excessive tightening can damage the gasket or associated components and may result in further oil leaks.
Additional Components Worth Inspecting
- Matching exhaust-side rocker cover gasket – 13270-58S01
- Rocker cover bolt seals or grommets
- Cam cover half-moon seals, where fitted
- Rocker cover breather hoses and fittings
- Camshaft oil seals if leakage is present nearby
These components are sold separately unless specifically included in another product listing.
What's Included?
- 1 × Genuine OEM Nissan Intake Rocker Cover Gasket – 13270-58S11
Not Included: Exhaust-side gasket (13270-58S01), rocker cover, bolts, bolt seals, half-moon seals, sealant or other engine components unless specifically stated.
Why Choose Genuine Nissan?
Genuine Nissan replacement gaskets are manufactured to the original specifications for their intended engine applications.
For RB-series engines, correct gasket profile, material and fitment are important for maintaining the original rocker cover sealing arrangement.
Whether you're completing routine maintenance or restoring a Skyline GT-R engine bay, genuine Nissan components provide a factory-specification replacement where the part number is confirmed.
Note: This listing includes one (1) Genuine OEM Nissan Intake Rocker Cover Gasket – 13270-58S11 only. Suitable for selected non-NEO RB-series engines. The matching exhaust-side gasket (13270-58S01) and other sealing components are sold separately. Supplied in genuine Nissan packaging, which may be removed for product photography.
Australian Stock & Fast Dispatch: At OEM4JDM, every part listed as In Stock is physically on our shelf in Australia and ready for fast dispatch.