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H-beam MXR connecting rods for 1.8T engines
A set of four MXR connecting rods made of hardened 4340 chrome-moly steel in an H-beam design. Designed for 1.8T engines used in models such as the 1999–2001 Audi S3 1.8T 20V with APY and AMK codes, as well as select 1.8T engines from Audi, Volkswagen, and Seat.
The connecting rods have a center-to-center length of 144 mm, a large head diameter of 50.6 mm, and a small head diameter of 20 mm. The kit includes ARP 2000 3/8-inch bolts. The manufacturer claims a 200 HP rating per rod and a maximum acceleration speed of 9,000 rpm.
Technical specifications
- Type: H-beam connecting rods
- Number of elements: 4 connecting rods
- Material: hardened 4340 chrome-moly steel
- Length between axles: 144 mm (5.669 in)
- Large head diameter: 50.6 mm (1.992 in)
- Small head diameter: 20 mm (0.787 in)
- Large and small head width: 24.9 mm (0.98 in)
- Screws: ARP 2000 3/8 inch
- Hole finishing: tolerance +/- 0.005 mm
- Balance: up to +/- 1 g for each connecting rod
- Control: magnetic particle testing, X-ray testing and ultrasonic testing
Application and fit
These connecting rods are designed for the 1999–2001 Audi S3 1.8T 20V with APY/AMK engines, as well as a wide range of 1.8T engines found in the Audi A3, A4, A6, and TT models, Volkswagen Golf, Jetta, New Beetle, and Passat, and select Seat models. Before purchasing, please compare the axle-to-axle length, mounting diameters, and widths with your engine.
The small headstock has no tapered end. Cap guides are used to precisely align the connecting rod and cap. Professional installation is highly recommended.
Manufacturer options
Upgrading the bolts to ARP L19 and selecting titanium-coated models is available. These are optional extras and not included in the standard kit.
Matching numbers and markings
Application designations: APY, AMK, 1999–2001, 20 mm. OEM/OE number not confirmed for this product.
Helpful information before purchasing
This is a set of four MXR H-beam connecting rods for 1.8T engines, specifically the 1999–2001 Audi S3 1.8T 20V APY/AMK. Compatibility should be confirmed by the engine code and your crankshaft dimensions. The key dimensions are a 144mm center-to-center length, a 50.6mm large head diameter, a 20mm small head diameter, and a 24.9mm width.
The most important information
- H-beam construction in 4340 chrome-moly steel.
- The kit includes four connecting rods and ARP 2000 3/8 inch bolts.
- Bores finished to a tolerance of +/- 0.005 mm and connecting rods balanced to +/- 1 g each.
- The small head has no tapered end; professional installation is highly recommended.
- The manufacturer states a declared rating of 200 HP per connecting rod and the ability to operate up to 9000 rpm.
Contents of the set
Confirmed Contents: 4 x MXR connecting rods and ARP 2000 3/8" bolts. Upgrade to ARP L19 bolts and titanium coated models are available as additional options if selected at purchase.
Frequently asked questions
How do I check if a part fits?
Please compare the engine code and application with your vehicle, and check the dimensions: 144 mm length between axles, 50.6 mm diameter of the large head, 20 mm diameter of the small head, and 24.9 mm width. This product is recommended for, among others, the Audi S3 1.8T 20V APY/AMK from 1999–2001.
Is the product ready for assembly?
The connecting rods are pre-drilled, but dimensions and compatibility with your specific engine should be confirmed before installation. Professional installation is highly recommended.
Does the offer include a complete set?
The source confirms a set of four connecting rods with ARP 2000 3/8-inch bolts. Additional upgrades, such as ARP L19 or titanium coating, are not standard kit contents.
Why is it worth buying from Multigenus?
- Ships from European warehouse for selected offers
- Final price within the EU, excluding customs and import surcharges
- 14 days to return in accordance with EU law
- Pre- and post-purchase support
- The product is described in a way that makes it easier to choose the right variant