Athena Cylinder Head Gasket 09342978 for Honda CB300F 2015-17 CBR 250 R ABS CBR250R 2011-13 CBR 300 R ABS CBR300R 2014-17 CRF250L 2012-16

Name: Athena Cylinder Head Gasket 09342978 for Honda CB300F 2015-17 CBR 250 R ABS CBR250R 2011-13 CBR 300 R ABS CBR300R 2014-17 CRF250L 2012-16
Brand: ATHENA
SKU: 09342978
Price: 15.02 GBP
Availability: InStock

Fits 6 bikes

RRP £18.10 Save 17%

£15.02

incl. VAT

In stock — delivered in 6–10 working days

Dispatched in 2–3 working days · delivered in 6–10.

Part #: 09342978

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§ 02 / About this part

What it is

Athena cylinder head gasket to fit Honda CB300F (2015–2017); Honda CBR 250 R ABS (2011–2013); Honda CBR 300 R ABS (2014–2017); Honda CBR250R (2011–2013); Honda CBR300R (2014–2017); Honda CRF250L (2012–2016).

This component is the critical seal between your cylinder and head. It maintains high-pressure combustion while keeping coolant and oil isolated. These gaskets fail due to overheating or improper torque, often resulting in white smoke or loss of power. This part is a direct replacement for the OEM reference provided. Ensure both mating surfaces are perfectly flat and clean before fitting. It is a precision-engineered part designed to withstand the extreme thermal cycles of racing. Replace this every time the head is removed to ensure a reliable seal on your bike.

§ 03 / Specs

The numbers

Brand: ATHENA
Part number: 09342978
Category: Gaskets & Seals
Weight: 0.07 kg
OEM cross-refs: 12251KYJ901
VAT: 20%

// Fitment

Will it fit your bike?

Fits 6 models · 6 year-bands

Honda 6 models

* Fitment data is provided as a guide. Verify compatibility against the bike's owner's manual or service handbook before ordering. Iron Offroad accepts no liability for incorrect application. Full terms and conditions apply.

§ 05 / About Iron Offroad

Iron Offroad

Iron Offroad is the off-road sibling of Iron City and Iron Stable — a UK shop for motocross, enduro, and trail-bike hard parts. Every fitment lives on the site, listed against KTM, Husqvarna, GasGas, Yamaha, Honda, Kawasaki, Suzuki, and Beta. Pick your bike on the timing-tower. Our USP is the data: fully enriched fitment so you find the right part for your bike quickly and get it fitted accurately. Brands you'd find on a paddock workbench — pads, sprockets, plastics, fork seals, cables, gaskets, bars, the things that actually wear out. Road-bike kit, scooter parts, and quad gear sit elsewhere; dirt and e-moto only. We operate from our storage facility in Leeds. Iron Offroad is a trading name of Iron Stable Ltd, registered in Mildenhall — Company No. 17061294. The business has a rich motorcycle history across multiple moto brands — the photos show where we came from — and recently pivoted into hard parts and online retail.