Engines and Components› Pistons and Piston Rings

Kerma TDI

1.9 TDI Standard Piston Set with Pins and Rings

$645.00

SKU: 1point9PistonSetStandard

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The Kerma TDI 1.9 TDI Piston Set is a standard size set of four OEM VW pistons designed for 1.9 liter TDI engines. This set includes pins and rings. It is manufactured by Nural/Federal Mogul, a supplier to VW dealerships.

This piston set is compatible with various Volkswagen models, including Mk3 Jetta TDI (1997-1998) with AHU engine code, B4 Passat TDI (1996-1997) with AHU or 1Z engine code, and Mk4 models (Golf, Jetta, Jetta Wagon, New Beetle) from 1998-2003 with the ALH engine code.
Show original supplier description
The Kerma TDI 1.9 TDI Piston Set provides a standard size replacement for four OEM VW pistons, specifically designed for 1.9 liter TDI engines. Each set comes complete with essential pins and rings, ensuring a comprehensive solution for engine rebuilds. It fits the Mk3 Jetta TDI from 1997-1998 equipped with the AHU engine code. For the B4 Passat TDI, it is compatible with the 1996-1997 model years, specifically those with either the AHU or 1Z engine code. The Mk4 generation is also covered, including the Golf TDI (1999-2003), Jetta TDI (1999-2003), Jetta Wagon (2002-2003), and New Beetle TDI (1998-2003), all utilizing the ALH engine code. Important considerations are necessary when installing these pistons, particularly if the engine block, rods, or crankshaft are being replaced. It is crucial to measure piston protrusion at Top Dead Center (TDC) above the block deck. This measurement, which must fall between .91mm and 1.20mm, is imperative for selecting the correct head gasket thickness to achieve the proper compression ratio. Failure to do so can impact engine performance and longevity.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandKerma TDI
Part Number1point9PistonSetStandard
CategoryEngines and Components

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy