Service Pistons Honda Accord VIII R20A3 – Teikin with TP/Riken Rings

A complete set of 4 service pistons designed for the Honda R20A3 engine used in the 2012–2013 Honda Accord. The kit includes high-quality Teikin pistons manufactured in Indonesia, piston pins, and a set of premium Japanese piston rings by TP (Teikoku Pistons) or Riken, depending on availability. These components have been tested in Honda engines and are fully compatible with the original specifications. The set serves as a direct replacement for the OEM piston and ring kits, restoring proper sealing and reducing oil consumption typical for the R20A3 engine.

Fitment – compatible Honda models

This piston set fits Honda Accord models equipped with the R20A3 engine and is especially recommended for vehicles that suffer from the well-known factory oil consumption issue. Compatible with:

• Honda Accord 4D 2012–2013 – R20A3 engine
• Honda Accord Tourer 2012–2013 – R20A3 engine

The set can replace the OEM Honda kit 06131-RNA-305. The pistons correspond to OEM reference 13010-RNA-Y00, and the rings replace the OEM set 13011-RZP-004.

Technical description and key features

Teikin pistons combined with TP/Riken rings offer the precision and durability required for modern Honda engines. Both brands are trusted globally in professional engine rebuilds, delivering excellent dimensional accuracy, controlled thermal expansion, and resistance to long-term wear. In the R20A3 engine, correct ring tension and piston-to-cylinder clearance are essential for restoring proper compression and reducing oil consumption.

• Accurate piston geometry ensures stable operation and proper cylinder sealing.
• Japanese TP/Riken rings provide excellent heat resistance and long service life.
• Complete assembly – pistons, rings and pins included.
• Direct replacement for OEM piston kits.
• Effective fix for excessive oil consumption in R20A3 engines.

Why Honda R20A3 engines consume too much oil

The 2012–2013 Accord with the R20A3 engine is known for a factory defect affecting the piston rings. The root cause includes:

• excessive ring end gap from the factory,
• insufficient ring tension against the cylinder wall,
• premature ring sticking due to deposits,
• loss of compression and increased blow-by.

As a result, some vehicles burn 0.5–1.0 L of oil per 1,000 km. This issue is well-known among Honda specialists and is commonly resolved by installing new pistons and rings.

Symptoms of worn rings in the R20A3 engine

Typical signs indicating worn or defective piston rings:

• increased oil consumption even during light driving,
• blue smoke during acceleration or after cold start,
• oily deposits on spark plugs,
• rough idle when cold,
• noticeable oil smell after the engine warms up,
• loss of compression and reduced power.

How this piston kit solves the problem

Installing new pistons and rings restores the sealing of the combustion chamber. After proper installation and cylinder preparation:

• oil consumption returns to normal levels,
• compression increases and engine stability improves,
• blow-by gases are reduced,
• engine runs smoother and more efficiently.

This is the only reliable long-term solution for oil burning in the R20A3 engine and is commonly applied in professional Honda rebuilds.

Common mistakes during selection and installation

• Using rings without checking ring end gap – critical in Honda R-series engines.
• Mixing rings from multiple kits – never recommended.
• Installing pistons without measuring cylinder ovality – can lead to improper sealing.
• Skipping cylinder honing – necessary to ensure proper ring seating.

OEM vs aftermarket – what you should know

In this case, Teikin pistons combined with TP/Riken rings are a proven aftermarket solution. They offer:

• dimensions and clearances closely matching OEM specifications,
• Japanese ring quality used in many OEM applications,
• excellent long-term durability in R-series engines,
• a more cost-effective alternative to Honda OEM kits.

FAQ – frequently asked questions about Honda Accord VIII R20A3 service pistons

Does this kit actually solve the oil consumption issue?
Yes. Replacing both pistons and rings is the only reliable and long-term fix for the R20A3 engine defect.

Is cylinder honing required?
Yes. Proper honing is necessary to allow the new rings to seat correctly and restore compression.

Are Teikin pistons different from OEM?
Slightly in production details, but dimensions and functional characteristics fully match OEM tolerances.

Are TP or Riken rings good quality?
Both TP and Riken are high-end Japanese ring manufacturers commonly used in professional engine rebuilding.