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Product detailed specification |
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|
Head diameter |
28mm |
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Stem diameter |
7mm |
|
Length |
98mm |
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Fits for |
Audi / VW - 1.8 16V, 2.0 16V, 2.2T 20V, 2.3 20V (KR, PL, 6A, 9A, ABF, 3B, AAN, ABY, ADU, 7A) |

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 338461R
Gasket thickness: 1.75mm
Bore size: 81.00mm
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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 |

Product detailed specification
Manufacturer: FCP Engineering
Model: FCPRHA14450619-4
Profile: H-beam
C to C: 144mm
Big end diameter: 50.6mm
Pin diameter: 19mm
Quantity: 4 pcs., 8 pcs. ARP2000 3/8" bolts
Made of: forged steel 4340 EN24er
Advertised horsepower rating: 600HP (4 cylinder)
Advertised RPM rating: 9000RPM
Audi / VW / Seat / Skoda:
1.8T 20V (AEB, BAM, AWB and others)

Product detailed specification
Manufacturer: FCP Engineering
Model: FCPRHVW14450621-4
Profile: H-beam
C to C: 144mm
Big end diameter: 50.6mm
Pin diameter: 21mm
Quantity: 4 pcs., 8 pcs. ARP2000 3/8" bolts
Made of: forged steel 4340 EN24er
Advertised horsepower rating: 600HP (4 cylinder)
Advertised RPM rating: 9000RPM
Audi / VW / Seat / Skoda:
1.8T 20V (AEB, BAM, AWB and others)

| ENGINE BEARINGS | ||
![]() |
MAIN BEARING SET |
|
| Part# | ||
| 5M1644H |
5M1644HX |
|
| Sizes | STD, .25, .50 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Upper & Lower | |
| Material | Tri-metal | |
| Min Std Shaft Size | 2.1243in / 53.958mm | |
| Max Std Shaft Size | 2.1251in / 53.978mm | |
| Min Std Tunnel Size | 2.3228in / 59.000mm | |
| Max Std Tunnel Size | 2.3236in / 59.019mm | |
| Max Wall at Crown | 0.0985in / 2.502mm | 0.0980in / 2.489mm |
| Max Overall Length | 0.728in / 18.49mm | |
| Notes | Set contain 6 x 1648H and 4 x 1644H shells. Use 1648H shell in #4 position as upper and lower. | |
|
Diagram |
|
|

| ENGINE BEARINGS | ||
![]() |
MAIN BEARING SET |
|
| Part# | ||
| 5M1644H |
5M1644HX |
|
| Sizes | STD, .25, .50 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Upper & Lower | |
| Material | Tri-metal | |
| Min Std Shaft Size | 2.1243in / 53.958mm | |
| Max Std Shaft Size | 2.1251in / 53.978mm | |
| Min Std Tunnel Size | 2.3228in / 59.000mm | |
| Max Std Tunnel Size | 2.3236in / 59.019mm | |
| Max Wall at Crown | 0.0985in / 2.502mm | 0.0980in / 2.489mm |
| Max Overall Length | 0.728in / 18.49mm | |
| Notes | Set contain 6 x 1648H and 4 x 1644H shells. Use 1648H shell in #4 position as upper and lower. | |
|
Diagram |
|
|

| ENGINE BEARINGS | ||
![]() |
MAIN BEARING SET |
|
| Part# | ||
| 5M1644H |
5M1644HX |
|
| Sizes | STD, .25, .50 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Upper & Lower | |
| Material | Tri-metal | |
| Min Std Shaft Size | 2.1243in / 53.958mm | |
| Max Std Shaft Size | 2.1251in / 53.978mm | |
| Min Std Tunnel Size | 2.3228in / 59.000mm | |
| Max Std Tunnel Size | 2.3236in / 59.019mm | |
| Max Wall at Crown | 0.0985in / 2.502mm | 0.0980in / 2.489mm |
| Max Overall Length | 0.728in / 18.49mm | |
| Notes | Set contain 6 x 1648H and 4 x 1644H shells. Use 1648H shell in #4 position as upper and lower. | |
|
Diagram |
|
|

|
Product detailed specification |
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|
Model number |
MIVN-1007 |
|
Head diameter |
34.00mm |
|
Stem diameter |
6.57mm |
|
Length |
109.60mm |
|
Material |
Black nitrited stainless steel |
|
Fits for |
Mitsubishi EVO 4-9 - 2.0 16V (4G63) |

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Product detailed specification |
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|
Model number |
MEVI-1007 |
|
Head diameter |
30.50mm |
|
Stem diameter |
6.54mm |
|
Length |
109.60mm |
|
Material |
Inconel |
|
Fits for |
Mitsubishi 2.0 16V (4G63T) |

|
Product detailed specification |
|
|
Model number |
MIVN-1008 |
|
Head diameter |
34.50mm |
|
Stem diameter |
6.57mm |
|
Length |
109.60mm |
|
Material |
Black nitrited stainless steel |
|
Fits for |
Mitsubishi EVO 4-9 - 2.0 16V (4G63) |

|
Product detailed specification |
|
|
Model number |
MIVN-1009 |
|
Head diameter |
35.00mm |
|
Stem diameter |
6.57mm |
|
Length |
109.60mm |
|
Material |
Black nitrited stainless steel |
|
Fits for |
Mitsubishi EVO 4-9 - 2.0 16V (4G63) |

|
Product detailed specification |
|
|
Model number |
MEVI-1008 |
|
Head diameter |
31.00mm |
|
Stem diameter |
6.54mm |
|
Length |
109.60mm |
|
Material |
Inconel |
|
Fits for |
Mitsubishi EVO 4-9 - 2.0 16V (4G63T) |