Diamond Pistons Marine Series 70034-8 - Replacement Mercury Racing Stern Engines - Coated Skirts - Includes Pins and Rings
Diamond Pistons Marine Series 70034-8 - Replacement Mercury Racing Stern Engines - Coated Skirts - Includes Pins and Rings
A$3,695.24
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-07 19:56:39
Features
Note for Pistons, Rings, Rotors, Rods and engine internals
Unless otherwise specified, some brands supply brake rotors, pistons, strut mounts, rods and rings separately. In some cases, titles may indicate plural, or 'set' - eg the term “ring set” often refers to the rings for a single piston only. If you’re unsure about what’s included with this product, please contact our team for clarification.
(keyword: pistons)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Diamond Pistons, Diamond Racing Products |
| StreetFX SKU | dpp70034-8 |
| SFX Item ID | 5528720 |
| Accounting SKU | dpp-70034-8 |
| Manufacturer SKU | 70034-8 |
| Manufacturer UPC | 686162220281 |
| Alternative References | 70034-8, DPP-70034-8 |
Marine Series - Replacement Mercury Racing Stern Engines - Coated Skirts - Includes Pins and Rings
Diamond Pistons Marine Series pistons are ideal for your high-demand boats. These forged aluminum pistons are significantly stronger than the factory pistons allowing your engine to handle that extra horsepower, high-rpm operation and long hours on the water.
Diamond Pistons Marine Series pistons feature:
• 3D milling on piston crowns for "ready to install" finish
• Moly skirt coating for friction-loss and skirt-wear protection
• Oversized valve pockets for "larger than stock" valve sizes
• Forged 2618 or 4032 aluminum alloy (where specified)
• Premium 8620 or H-13 steel wrist pins (where specified)
| Product Attributes | |
|---|---|
| Brand | Diamond Pistons |
| Manufacturer's Part Number | 70034-8 |
| Part Type | Pistons |
| Product Line | Diamond Pistons Marine Series Pistons |
| UPC | 686162220281 |
| Piston Rings Included | Yes |
| Bore (in.) | 4.280 in. |
| Bore (mm) | 108.712mm |
| Stroke | 4.370 in. |
| Engine Stroke Type | Stock |
| Rod Length | 6.695 in. |
| Piston Style | Flat top, with single valve relief |
| Piston Material | Forged aluminum |
| Compression Height (in.) | 1.365 in. |
| Piston Head Volume (cc) | +0.40cc |
| Wrist Pin Style | Floating |
| Wrist Pin Retainers Included | Yes |
| Wrist Pin Included | Yes |
| Pin Diameter (in.) | 1.040 in. |
| Piston Ring Thickness | 1/16 in. x 1/16 in. x 4.00mm |
| File Fit | Yes |
| Gapless | No |
| Top Ring Thickness | 1/16 in. |
| Top Ring Material | Ductile iron |
| Top Ring Facing Material | Plasma-moly |
| Second Ring Thickness | 1/16 in. |
| Second Ring Material | Ductile iron |
| Second Ring Facing Material | Ductile iron |
| Oil Ring Thickness | 4.0mm |
| Oil Ring Material | Stainless steel |
| Oil Ring Tension | High |
| Remanufactured | No |
| Quantity | Sold as a set of 8. |
| Notes | Pistons are 2618 material. |
Compatibility
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