Honda Timing Belt Tensioner 14520-P2A-305 / Koyo PU245339ARR1DV – Japan

Japanese-made timing belt tensioner for Honda D-series engines used in Civic, CR-X, HR-V, and Logo. Manufactured in Japan by Koyo—a leading OEM supplier—this unit delivers precise tracking, quiet operation, and long-term durability equivalent to factory-installed parts.

Application and Advantages of the Koyo PU245339ARR1DV Tensioner

The timing belt tensioner maintains correct belt tension across the full RPM range. Insufficient tension risks belt slip and valve damage, while excessive preload accelerates bearing and water-pump wear. The Koyo Japan design ensures stable preload and consistent belt guidance, even at high temperatures and engine speeds.

Compatibility – Honda Models and Engines

• Honda Civic (1991–2001) – EJ9, MB2, EG8, MA9, EK3, MB3, EG5, EH9, EJ1, MB1, EJ6/EJ8, EK1, EJ7, MB8, MB9
• Honda CR-X (1992–1998) – EH6
• Honda HR-V (first generation)
• Honda Logo

Engines: D14A3, D14A4, D14A7, D14A8, D15Z1, D15Z3, D15Z6, D15Z8, D16B2, D16Z6, D16Z9, D16Y2, D16Y7, D16Y8, D16W1, D16W5

Installation and Cooperation with the Tensioner Spring

This tensioner works together with the Honda timing belt spring 14516-P2A-J00. Replacing both components at the same time restores proper preload and prevents future timing system disassembly.

Technical Specifications

• Primary Honda OEM: 14520-P2A-305
• Equivalent OEM: 14510-P08-003, 14510-P08-004, 14520-P2A-306
• Manufacturer: Koyo Japan
• Manufacturer Ref.: PU245339ARR1DV
• Construction: Hardened steel body, high-precision ball bearing
• Origin/Condition: Japan / brand new

FAQ – Common Questions

Is this an OEM-grade part?
Yes. Koyo is a certified Japanese supplier; specifications match factory requirements for Honda D-series engines.

Should I replace the spring together with the tensioner?
Recommended. Replacing the 14516-P2A-J00 spring with the tensioner helps maintain precise belt tension and avoids rework.

Symptoms of a worn tensioner?
Rattling from the timing cover area, uneven belt tracking, or perceptible bearing play.