Kit contents and a Honda Keihin injector from our shop.
Complete 6-piece per-injector rebuild kit for Honda Keihin fuel injectors (16450-RBB-003 and related). Used across a wide range of Honda and Acura 4-cylinder applications — Civic Si, RSX Type-S, TSX, Accord, CR-V, and Element.
Full engine sets: All K-series and K24 engines use 4 injectors. Order 4 kits to do a complete set. iVTEC engines respond especially well to a fresh seal-and-clean service — the injectors are under elevated demand from VTEC cam lobes.
The 16450-RBB-003 injector (and related Keihin units) was used across Honda's K-series and K24 4-cylinder family from roughly 2002 through 2011. Different vehicles have slightly different OEM part numbers but share the same body dimensions, o-ring sizes, and seal kit.
| Vehicle | Years | Engine | OEM Injector |
|---|---|---|---|
| Civic Si (EP3) | 2002–2005 | K20A3 (VTEC) | 16450-PNA-003 |
| Civic Si (FG2 / FA5) | 2006–2011 | K20Z3 (i-VTEC) | 16450-RBB-003 |
| Accord 2.4L (4-cyl) | 2003–2007 | K24A4 / K24A8 | 16450-RAA-A01 |
| CR-V 2.4L | 2005–2011 | K24Z1 | 16450-RZA-003 / 16450-RZ5-003 |
| Element 2.4L | 2003–2011 | K24A4 / K24Z1 | 16450-RBB-003 |
| Vehicle | Years | Engine | OEM Injector |
|---|---|---|---|
| RSX Type-S | 2002–2006 | K20A2 / K20Z1 (i-VTEC) | 16450-PRC-003 / 16450-PNC-003 |
| CSX Type-S (Canada) | 2006–2011 | K20Z2 / K20Z3 | 16450-RBB-003 |
| TSX 2.4L | 2004–2008 | K24A2 | 16450-RAA-A01 |
| TSX 2.4L | 2009–2014 | K24Z3 | 16450-RL5-A01 |
While the K-series engines share the same basic Keihin injector body, confirm your specific OEM part number matches before ordering. Some JDM-spec K20A and K20A2 engines have slightly different injectors. When in doubt, pull an injector and measure the o-ring diameters — the top o-ring is approximately 14.5mm OD and the lower is approximately 11.5mm OD.