Diamond Pistons
Diamond Pistons Race Series 21557-RS-8 Pistons, Dish, 12 Degree LS2K Series, Forged Aluminum, 4.125 in. Bore, -20.00cc Head Volume, Chevy, LSX, Set of 8
dpp21557-RS-8
IMPORTANT NOTICE: Note for Pistons, Rings, Rotors, Rods and engine internalsUnless otherwise specified, some brands supply brake rotors, pistons, 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.Reference Information Reference Data (Provide these details to our support team) Brand Name/s Diamond Pistons, Diamond Racing Products StreetFX SKU dpp12443-8 SFX Item ID 5524930 Accounting SKU dpp-12443-8 Manufacturer SKU 12443-8 Manufacturer UPC 686162207237 Alternative References 12443-8, DPP-12443-8
Pistons
Domestic Series - 1200HP Rated - 2618 Material - Includes Pins and Rings
Diamond Pistons Big Block 24/26 Degree Street/Strip Dish Series pistons are available for a variety of applications, including many Chevrolet V-8 engines from 1965-90. Forged from aluminum with single valve relief, these dish-style pistons are offered in different bore, stroke, and rod length sizes—along with several other options. Order individually or in a set of 8.
Additional details:
• 1,200 hp rated
• Forced pin oilers from the oil ring
• Pin fitted
• 3-D pockets
• Designed for mild boost applications
• Pins, locks and support rails (if required) included
| Product Attributes | |
|---|---|
| Brand | Diamond Pistons |
| Manufacturer's Part Number | 12443-8 |
| Part Type | Pistons |
| Product Line | Diamond Pistons Big Block 24/26 Degree Street/Strip Dish Series Pistons |
| UPC | 686162207237 |
| Piston Rings Included | Yes |
| Bore (in.) | 4.320 in. |
| Bore (mm) | 109.728mm |
| Stroke | 4.500 in. |
| Engine Stroke Type | Stroked |
| Rod Length | 6.535 in. |
| Piston Style | Dish, with single valve relief |
| Piston Material | Forged aluminum |
| Compression Height (in.) | 1.395 in. |
| Piston Head Volume (cc) | +14.50cc |
| Wrist Pin Style | Floating |
| Wrist Pin Retainers Included | Yes |
| Wrist Pin Included | Yes |
| Pin Diameter (in.) | 0.990 in. |
| Piston Ring Thickness | 1/16 in. x 1/16 in. x 3/16 in. |
| 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 | 3/16 in. |
| Oil Ring Material | Stainless steel |
| Oil Ring Tension | Standard |
| Remanufactured | No |
| Quantity | Sold as a set of 8. |
| Notes | Pistons are 2618 material. |
| Brand Name/s | Diamond Pistons |
|---|---|
| StreetFX SKU | dpp12443-8 |
| SFX Item ID | 5524930 |
| Supplier Item Code | 5524930 |
| Manufacturer SKU | 12443-8 |
| Manufacturer UPC | 686162207237 |
| Alternative References | 1200HP |
No specific fitment data available for this part. For clarification, please contact us.
| Application Data | |
|---|---|
| Make | CHEVROLET |
| Beginning Year | 1965 |
| Ending Year | 1969 |
| Engine Type | V8 |
| Engine Family | Chevy big block Mark IV |
| Engine Size | 6.5L/396 |
| Application Notes | For use with 24 or 26 degree cylinder heads. |
| Make | CHEVROLET |
| Beginning Year | 1970 |
| Ending Year | 1990 |
| Engine Type | V8 |
| Engine Family | Chevy big block Mark IV |
| Engine Size | 7.4L/454 |
| Application Notes | For use with 24 or 26 degree cylinder heads. |
This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.
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