2004 MAZDA B-Series Regular Cab Bolt Pattern
Checking fitment for your vehicle? Below you will find the factory bolt pattern (also known as the lug pattern) for the 2004 MAZDA B-Series Regular Cab, along with offset and center bore data.
| Bolt Pattern (Lug Pattern) | 6x139.7 (6x5.5") |
|---|---|
| Lug Nut / Bolt Size | N 12x1.50 |
| Center Bore (CB) | 93.1 mm |
| Offset (ET) | 25 |
| Torque Specs | 80 ft-lbs (108 Nm) |
Imperial Match: 6x139.7 is commonly referred to as 6x5.5" in US Standard.
2004 B-Series Regular Cab — Year-Specific Fitment Context
The 2004 MAZDA B-Series Regular Cab is in year 8 of 11 using the 6x139.7 pattern (1997–2007). Wheels from any 1997–2007 MAZDA B-Series Regular Cab are cross-compatible with the 2004 model. Across its full production run (1992–2009), the B-Series Regular Cab has also used: 5x114.3.
MAZDA B-Series Regular Cab Bolt Pattern by Year
The table below shows how the B-Series Regular Cab's wheel specifications have changed over the years. The 2004 model year is highlighted.
| Year | Bolt Pattern | Center Bore | Offset |
|---|---|---|---|
| 1992 | 5x114.3 | 67.1 | 45-50 |
| 1993 | 5x114.3 | 67.1 | 45-50 |
| 1994 | 5x114.3 | 67.1 | 45-50 |
| 1995 | 5x114.3 | 67.1 | 45-50 |
| 1996 | 5x114.3 | 67.1 | 45-50 |
| 1997 | 6x139.7 | 93.1 | 25 |
| 1998 | 6x139.7 | 93.1 | 25 |
| 1999 | 6x139.7 | 93.1 | 25 |
| 2000 | 6x139.7 | 93.1 | 25 |
| 2001 | 6x139.7 | 93.1 | 25 |
| 2002 | 6x139.7 | 93.1 | 25 |
| 2003 | 6x139.7 | 93.1 | 25 |
| ▸ 2004 | 6x139.7 | 93.1 | 25 |
| 2005 | 6x139.7 | 93.1 | 25 |
| 2006 | 6x139.7 | 93.1 | 25 |
| 2007 | 6x139.7 | 93.1 | 25 |
| 2008 | 5x114.3 | 67.1 | 45-50 |
| 2009 | 5x114.3 | 67.1 | 45-50 |
6x139.7 Pattern Context
This bolt pattern appears on 1067 vehicles in our current database and is considered common.
Examples of other vehicles using 6x139.7:
Expert Buying Guide for 2004 MAZDA B-Series Regular Cab
The 2004 MAZDA B-Series Regular Cab uses a 6x139.7 bolt pattern with a 93.1mm center bore. When selecting aftermarket wheels, ensure hub-centric rings are used to match the 93.1mm bore, preventing vibrations and ensuring proper load distribution. The factory offset is 25mm; deviations beyond ±10mm may cause rubbing or clearance issues. Always verify lug nut thread pitch (M12x1.50) and seat type—use conical (60-degree) or ball seat lugs as required by the wheel. Improper lug nuts can lead to wheel detachment. For safety, re-torque after 50-100 miles of driving.
Historical Fitment Data Reference
In our dataset, MAZDA B-Series Regular Cab appears from 1992 to 2009 (18 model years). Across model years, this model appears with 2 bolt patterns (5x114.3, 6x139.7).
- Observed bolt-pattern variants for this model: 2
- Observed center-bore variants for this model: 2
- Observed lug-size variants for this model: 2
- Observed total offset span across years: 95.0 mm
Quick Tips & Safety Warnings
- ✅ Re-torque lug nuts to 85-95 ft-lbs after 50-100 miles of driving.
- ✅ Avoid wheels with a center bore larger than 93.1mm without hub-centric rings.
- ✅ Check offset carefully: 25mm is ideal; offsets below 15mm may rub suspension components.
- ⚠️ Verify thread pitch before installation; M12x1.25 and M12x1.5 are not interchangeable.
- ⚠️ Torque lugs in a star pattern to 80 ft-lbs (108 Nm), then re-check torque after 50-100 km (30-60 miles).
- ⚠️ This model has multiple bolt-pattern records across years. Match wheels to exact year/trim before purchase.
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2004 MAZDA B-Series Regular Cab — Frequently Asked Questions
What is the bolt pattern for a 2004 MAZDA B-Series Regular Cab?
The 2004 MAZDA B-Series Regular Cab uses a 6x139.7 bolt pattern (also called lug pattern or PCD). The center bore is 93.1mm and the offset is 25mm.
What other years of MAZDA B-Series Regular Cab have the same bolt pattern as the 2004?
The MAZDA B-Series Regular Cab uses the 6x139.7 pattern from 1997 through 2007. Wheels from any of these model years are dimensionally compatible with the 2004, provided the offset and center bore also match.
What lug nut size does the 2004 MAZDA B-Series Regular Cab use?
The 2004 MAZDA B-Series Regular Cab uses N 12x1.50 lug nuts. Always verify the thread pitch and seat type (cone, ball, or flat) match your aftermarket wheels.
What is the factory wheel offset for a 2004 MAZDA B-Series Regular Cab?
The OEM offset for the 2004 B-Series Regular Cab is typically around 25mm. Depending on wheel width, a deviation of ±5mm is usually acceptable, but verify suspension clearance.
What is the PCD for a 2004 MAZDA B-Series Regular Cab?
PCD stands for Pitch Circle Diameter, which is the same as the bolt pattern. For the 2004 B-Series Regular Cab, the PCD is 6x139.7.
Can I use spacers on my 2004 MAZDA B-Series Regular Cab?
Yes, but ensure the wheel spacers match the 6x139.7 bolt pattern and 93.1mm center bore. Also verify that you have enough thread engagement for your N 12x1.50 hardware.
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