SKU: 34118370477

Audi/VW 2.0T FSI & TSI Diamond Forged Pistons 9.0:1 82.50/83.0mm Bore

Sale price$675.00 Regular price$750.00
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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

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Description

Audi/VW 2.0T FSI & TSI Diamond Forged Pistons 9.0:1 82.50/83.0mm BoreThe Audi VW 2. 0L TFSI pistons are made by Diamond Racing USA and are designed to be used in all engine configurations with a 21. 00mm pin. They are built as tough as can be to withstand the vigorous demands of racing. No matter how much boost pressure you are running or how high you are revving, these pistons will take it and ask for more! Check the individual features for your application below. Product Features and Design 2618 Low silicon High

The Audi/VW 2.0L TFSI pistons are made by Diamond Racing USA and are designed to be used in all engine configurations with a 21.00mm pin. They are built as tough as can be to withstand the vigorous demands of racing. No matter how much boost pressure you are running or how high you are revving, these pistons will take it and ask for more! Check the individual features for your application below.

Product Features and Design

  • 2618 Low-silicon / High expansion alloy for High HP/Boost applications
  • Round skirt design with a bottom reinforcing band
  • 3D under-crown milling to ensure minimal weight without compromising strength.
  • 3D milling on piston crowns for ready-to-install finish
  • Oversize valve pockets for larger than stock valves and clip cuts on the edge of the pistons
  • Window milling reduces the piston's overall weight while maintaining its strength and structural integrity
  • Lateral gas ports for better ring seal
  • Offset pins for quiet operation
  • Molly Skirt coating for friction minimization and skirt wear protection
  • Premium 8620 series pins from 1018 mild steel

*Optional Tool steel H-13 alloy wrist pins available as an upgrade. Part number H8662250225C wall thick. 5.72mm.

Diamond Pistons

Diamond pistons are engineered with only one thing in mind: Winning races! They are manufactured in the USA from 2618 materials. Diamond racing company is known since the late 60s to produce the highest quality engine parts around.

For the past 2 decades, Diamond has solely dedicated itself to manufacturing forged pistons. With all state-of-the-art machinery, they offer customers the state of the industry in machining.

The Coordinate Measuring Machine (CMM) is one of several sophisticated pieces of measuring and modeling apparatus used in Diamond’s engineering department. The CMM provides very accurate measurements, measuring the location and details of valve pockets, for example, to within a .0001in.

This laser scanner is used for modeling purposes, especially for scanning piston domes where it scans thousands of surface points in minutes. Developing the highest quality pistons in the industry by using the latest CNC machinery and computer software aids, as well as providing unmatched quality control.

With these credentials, it was only a matter of time before we decide that this is the firm to work with for making unlimited horsepower!

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 34118370477

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Verified Purchase
Don
Alexandria, US
★★★★★ 5
Fixed 4.3 Merc IO
Size: 96158T-1PCS
Engine wouldn't start reliably or consistently. I had no clicking either from the old solenoid even though it would start from time to time...motor starts perfect after install. Pretty easy install as long as you reconnect the right wires. This worked perfect!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 8, 2023
M
Verified Purchase
Mr Sexy
Bozeman, US
★★★★★ 5
Quality
Size: 96158T-2PCS
Worth the money. Quality. Fit good. Easy too install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 21, 2025
A
Verified Purchase
Amazon Customer
Massapequa, US
★★★★★ 5
Solenoid replacement
Size: 96158T-2PCS
No changes were needed, fit exactly as the oem. Happy Happy.
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Reviewed in the United States on September 10, 2025
S
Verified Purchase
SOmeone
Houston, US
★★★★★ 1
Did not work.
Size: 96158T-2PCS
I went to double check that I can read but it says 35hp-275hp and it sure didn’t work on my 200ho mercury so I do not recommend. If you’re on a time crunch don’t push your luck buy OEM like I am doing right after this review.
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Reviewed in the United States on May 13, 2026
J
Verified Purchase
James
Battle Creek, US
★★★★★ 5
Great Banana Plugs
Size: 6 Pairs / 12 pcs
I recently purchased these FosPower banana plugs to tidy up my speaker wiring, and they’ve been a significant improvement over bare wire ends. Installation is straightforward: strip the wire, loosen the two tiny set screws, slide the wire in, tighten everything down, and then screw the barrel back on. Once assembled, the connection feels secure and tight, making it much easier to swap gear around and reducing the risk of stray strands causing a short. The standout feature of this design is the dual set-screw clamp. It firmly grips the speaker wire without relying on the outer collar to “crush” it in place. I’m using 12-gauge wire, and it holds well for my setup. Initially, the plugs may fit snugly in some binding posts. Once seated, there’s no wobble, but it might take a bit of extra push the first time. The set screws are small, so a bit of precision is needed. Use a small flathead screwdriver and don’t over-tighten them. Overall, these plugs feel well-made, look clean once installed, and fulfill their purpose as banana plugs: making speaker connections quick, neat, and reliable.
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Reviewed in the United States on May 27, 2026

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