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Product detailed specification |
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Bore size |
86.50mm |
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Stroke |
91.00mm |
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JE Pistons compression ratio (CR) |
11.5:1 |
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OEM compression ratio (CR) |
11.3:1 |
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Dome volume (CC) |
-9.60cm3 |
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Compression height (CH) |
32.30mm |
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Pin diameter |
21mm |
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Features |
Accepts Turbo and Nitrous; FSR series skirt |
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Fits for |
BMW M3 E36 - 3.2 (S50B32) |

Part number 7M5532H-0.25
ACL Race Series main bearings
Audi / VW - 2.8 2.9 3.2 3.6 VR6 R32 R36 (BUB, BHK, AES, AUE, ABV, AAA, AMY)


| ENGINE BEARINGS | ||
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MAIN BEARING SET |
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| Part# | ||
| 5M8309H |
5M8309HX |
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| Sizes | STD, .025, .25, 0.5 | STD |
| Oil Clearance | Standard | + 0.001" Extra |
| Half Type | Identical Halves | |
| Material | Tri-Metal | |
| Min Std Shaft Size |
2.3616in / 59.984mm |
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| Max Std Shaft Size |
2.3622in / 60mm |
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| Min Std Tunnel Size |
2.5197in / 64mm |
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| Max Std Tunnel Size |
2.5205in / 64.02mm |
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| Max Wall at Crown |
0.0789in / 2.005mm |
0.0784in / 1.992mm |
| Max Overall Length |
0.748in / 19mm (8297H/HX) 0.5953in / 15.12mm (8298H/HX) 0.9035in / 22.95mm (8309H/HX - Flange) |
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| Notes | Thrust in #5 pos. | |
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Diagram |
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Length: 1784mm
Width: 27mm
Number of tooth: 223
Gates' timing belts offer a precision fit with easy installation and no interference engine damage - exactly what you've come to expect from the worldwide leader in timing belts.
- Tensile cord reinforced with premium, high-strength glass cords.
- Gripping teeth with aramid fiber technology and high saturation HNBR elastomeric composites for exceptional durability and heat resistance.
- Wear-resistant tooth jacket supported by reinforced nylon fabric and double-tooth stability.
The superior construction of Gates timing belts makes them 300 percent stronger than the standard aftermarket belt while providing up to three times the heat resistance.

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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 |


ARP are a manufacturer of fasteners / bolts found in engines and drivelines, ranging from OEM replacement parts to specialty hardware for racing applications.
ARP is the world leader in fastener technology.
ARP Pro series connecting rod bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up to ten times more fatigue strength. This makes them far superior to standard OEM fasteners in terms of durability, and fully capable of handling the extra stress of high-combustion engines.


| ENGINE BEARINGS | ||
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CON ROD BEARING SET |
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| Part# | ||
| 4B1925H |
4B1925HX |
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| Sizes | STD, 025, .25 | 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 |
1.7707in / 44.976mm |
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| Max Std Shaft Size |
1.7717in / 45mm |
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| Min Std Tunnel Size |
1.8898in / 48mm |
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| Max Std Tunnel Size |
1.8898in / 48mm |
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| Max Wall at Crown |
0.0591in / 1.502mm |
0.0586in /1.489mm |
| Max Overall Length |
0.6890in / 17.5mm |
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| Notes | ||
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Diagram |
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