
Athena Racing 338 series multilayer steel (MLS) cylinder head gasket.
Athena MLS gaskets are designed to suit the requirements of today’s competition engines offering enhanced sealing compared to the OEM product. The gaskets are assembled from 2-5 layers of high quality stainless and spring steels.
Part number: 338254R
Gasket thickness: 1.25mm
Bore size: 83.80mm
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Part number starting with 338 |
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Athena advantages |
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Optimized radius embossing shape |
The round shape of the embossing increases sealing on cylinder bore, oil and cooling water passages and improves spring back strength |
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Advanced stopper technology |
State of the technology enhances sealing pressure around the cylinder. Highest sealing properties in high power engines |
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Coating technology |
Designed & engineered by Athena the special coating applied on steel surfaces, improves temperature resistance & reliability of the head gasket |

| ENGINE BEARINGS | ||
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CON ROD BEARING SET |
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| Part# | ||
| 4B8296H |
4B8296HX |
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| Sizes | STD, .025, .25, .50 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Identical Halves | |
| Material |
Tri-metal Hardened steel backs |
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| Min Std Shaft Size |
2.0466in / 51.984mm |
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| Max Std Shaft Size |
2.0472in / 51.000mm |
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| Min Std Tunnel Size |
2.1654in / 55.000mm |
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| Max Std Tunnel Size |
2.1661in / 55.020mm |
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| Max Wall at Crown |
0.0591in / 1.500mm |
0.0585in / 1.487mm |
| Max Overall Length |
0.6496in / 16.50mm |
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| Notes | Suits 52mm journal only | |
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Diagram |
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Product detailed specification |
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Bore size |
86.50mm |
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Stroke |
86.00mm |
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Wossner compression ratio (CR) |
8.8:1 |
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OEM compression ratio (CR) |
8.8:1 |
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Dome volume (CC) |
-20.50cm3 |
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Compression height (CH) |
30.40mm |
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Pin diameter |
21mm |
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Features |
Accepts Turbo and Nitrous |
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Fits for |
Opel 2.0 16V Turbo (Z20LET, Z20LEH, Z20LER, Y20LET) |

| Sizes | STD, .025, .25 |
| Oil Clearance | Standard |
| Half Type | Upper & Lower |
| Material | Tri-Metal |
| Min. Std Shaft Size | 2.4403in / 61.984mm |
| Max. Std Shaft Size | 2.441in / 62.001mm |
| Min. Std Tunnel Size | 2.5992in / 66.02mm |
| Max. Std Tunnel Size | 2.5998in / 66.035mm |
| Max Wall at Crown | 0.0789in / 2.004mm |
| Max Overall Length | 0.7874in / 20mm (8103H/HX) 0.9055in / 23mm (8104H/HX) |
| Weight | 0.44 |
| Notes | 0 |


| ENGINE BEARINGS | ||
![]() |
CON ROD BEARING SET |
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| Part# | ||
| 4B2166H |
4B2166HX |
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| Sizes | STD, .25, .50 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Identical Halves | |
| Material |
Tri-metal Hardened steel backs |
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| Min Std Shaft Size |
2.0468 in / 51.990 mm |
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| Max Std Shaft Size | 2.0472 in / 52.000 mm | |
| Min Std Tunnel Size | 2.1654 in / 55.000 mm | |
| Max Std Tunnel Size | 2.1661 in / 55.020 mm | |
| Max Wall at Crown | 0.0589 in / 1.496 mm | 0.0584 in / 1.483 mm |
| Max Overall Length |
0.792 in / 20.12 mm |
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| Notes | ||
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Diagram |
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