How to read this list
Rank
Position in the Top 37, sorted by audience size from largest to smallest. Updated weekly.
Audience size
Estimated number of unique people in Japan who actively engage with this audience, derived from anonymized search-behavior signals.
Country share
Share of the global audience that is active in Japan. A higher value means the audience is more locally concentrated here.
Avg age
Average age in years across the people who engage with this audience in Japan, derived from anonymized search-behavior signals. A dash means demographic data is not yet available.
Female share
Share of women among the people who engage with this audience in Japan. 50% is gender-balanced; values above mean female-skewed, below mean male-skewed.
Ranking
| Rank | Audience | Audience size | Country share | Avg age | Female share | Subtype |
|---|---|---|---|---|---|---|
| 1 |  Denso |
288k | 24.4% | 40.9 | 22.9% | Car parts |
| 2 |  Thule (automobile accessories) |
147k | 5.6% | 38.6 | 24.8% | Car parts |
| 3 |  Brembo |
136k | 4.8% | 41.3 | 46.1% | Car parts |
| 4 |  Mopar |
99k | 1.9% | 34.5 | 30.8% | Car parts |
| 5 |  Valeo |
98k | 7.7% | 35.4 | 37.9% | Car parts |
| 6 |  AutoZone |
61k | 0.1% | 36.1 | 35.9% | Car parts |
| 7 |  Advance Auto Parts |
51k | 0.2% | 31.3 | 31.9% | Car parts |
| 8 |  Hella |
41k | 6.1% | 23.0 | 56.1% | Car parts |
| 9 |  Sparco |
40k | 2.7% | 34.0 | 36.0% | Car parts |
| 10 |  ACDelco |
37k | 2.5% | 44.5 | 30.4% | Car parts |
| 11 |  Rugged Ridge |
27k | 10.4% | 29.5 | 20.3% | Car parts |
| 12 |  Magura |
13k | 1.6% | 38.3 | 29.9% | Car parts |
| 13 |  Magneti Marelli |
9.2k | 1.9% | 33.3 | 16.4% | Car parts |
| 14 |  American Racing |
6.4k | 1.7% | 35.5 | 44.1% | Car parts |
| 15 |  Smittybilt |
5.4k | 2.3% | 31.9 | 27.5% | Car parts |
| 16 |  Edelbrock |
4.6k | 0.8% | 42.7 | 15.2% | Car parts |
| 17 |  4 Wheel Parts |
4.4k | 0.4% | 35.7 | 47.9% | Car parts |
| 18 |  LMC Truck |
3.4k | 0.3% | 40.3 | 20.0% | Car parts |
| 19 |  Carglass |
3.3k | 0.0% | 36.0 | 28.5% | Car parts |
| 20 |  Car glass |
2.6k | 0.1% | 45.8 | 0.0% | Car parts |
| 21 |  Pure Diesel Power |
1.4k | 0.5% | 28.3 | 73.6% | Car parts |
| 22 |  Deutz AG |
1.2k | 0.6% | 31.3 | 11.8% | Car parts |
| 23 |  RallySport Direct |
832 | 0.7% | 33.1 | 0.0% | Car parts |
| 24 |  Paravan |
703 | 0.2% | 40.6 | 35.4% | Car parts |
| 25 |  4 State Trucks |
487 | 0.2% | 27.2 | 75.2% | Car parts |
Want the full picture for any of these audiences?
Open any profile to see psychographics, top regions, peer affinities and demographic splits — all derived from the same anonymized signals.
Frequently asked questions
How is this Top 37 list compiled?
Rascasse aggregates anonymized search-behavior signals across Japan and ranks each car parts by its estimated audience size. Only entries with at least 5 measured entities are listed.
How often is the list updated?
The ranking is refreshed weekly from the latest search-behavior data and re-published as a static page.
What is the largest car parts in Japan?
Denso currently leads with an estimated audience of 288k people in Japan.