Tesla TPMS Part Numbers Explained: 1490701-01-B, 1490750-01-A and Their Cross-References

Ordering a Tesla tire pressure sensor by description alone is how workshops end up with a part that bolts in perfectly and never reports a pressure. The car does not recognise "a Tesla TPMS sensor" — it recognises a specific part number on a specific radio generation. This guide walks through the numbers we actually see on Tesla Bluetooth sensors, what each block of characters means, and where cross-referencing goes wrong.

Everything below comes from production parts data and workshop feedback. Where a number cannot be confirmed, we say so rather than guessing — an unverified cross-reference is worse than no cross-reference at all.

1. Why Tesla Part Numbers Confuse Buyers

Three things make Tesla TPMS numbers harder to work with than most brands. First, Tesla changed the sensor generation during production, so a number that is correct for a 2019 car is wrong for a 2021 car of the same model. Second, the same sensor is written in several formats — with dashes, without dashes, with a trailing revision letter — and each format shows up somewhere in the supply chain. Third, the aftermarket uses "equivalent" language loosely, so two listings that look identical can describe different revisions.

The practical consequence: a part number is not a product description, it is an identifier. Treat it as the only thing worth confirming before payment.

2. Anatomy of a Tesla TPMS Part Number

The Bluetooth-family numbers follow a consistent shape: a seven-digit base number, a two-digit revision group, and a single-letter change level. Reading it in blocks makes the differences obvious.

So 1490701-01-B reads as: family 1490701, revision 01, change level B. 1490750-01-A is a different family entirely — not a newer or older version of 1490701. That distinction is the single most misread detail in this whole topic.

3. The Bluetooth Family at a Glance

The Bluetooth generation covers the vehicles built after Tesla moved away from the 433MHz system. The numbers we supply and see most often are:

Vehicle coverage for the Bluetooth generation is Model 3 built from October 2020 onward, all Model Y from launch, refreshed Model S from June 2021, and refreshed Model X from October 2021. Anything earlier than those dates runs the 433MHz system and takes a different part family altogether.

4. Where Cross-Referencing Goes Wrong

Cross-referencing is legitimate when it maps one part number to another that is genuinely the same fitment. It becomes dangerous in three specific patterns we see regularly:

• Crossing a Bluetooth number onto a 433MHz car. The number is valid, the vehicle is wrong. This is the most common cause of a sensor that reads on the bench and never appears on the dashboard.
• Treating a base-number change as a revision. 1490701 and 1490750 are different designs; swapping one for the other is not a supersession.
• Using an aftermarket "equivalent" with no stated revision. If a listing gives no revision group or change level, there is nothing to verify against.

A fourth pattern is subtler: the correct part fitted to the wrong wheel position after a rotation, which produces a single blank reading that looks exactly like a wrong-generation fault. Check position learning before condemning the part.

5. How to Verify Before You Order

Four checks, in order of reliability. Together they take under five minutes and eliminate almost every ordering error.

• Read the number off the old sensor. Photograph it before the old unit is discarded. The flat face against the rim usually carries the etching.
• Confirm the build date. Door-jamb label or VIN decode. The October 2020, June 2021 and October 2021 boundaries decide the generation.
• Scan with a dual-protocol tool. A tool limited to 315/433MHz stays silent on a Bluetooth car; silence is a result, not a fault.
• Confirm by VIN through Tesla service when the marking is unreadable or the car sits on a production boundary.

For export orders, keep the VIN or the photographed number on the order record. If a sensor is later reported as faulty, that record shows whether the correct generation and revision were ordered — which is the difference between a warranty claim you can defend and one you cannot.

6. Stocking Advice for Shops and Distributors

Because both generations remain in service, the practical arrangement is two clearly labelled bins, sorted by build date rather than model year, with the part numbers printed on the label rather than written in marker. Three habits reduce returns more than any sales technique:

• Test one sensor from every batch against a known Bluetooth car and a known 433MHz car before shipping
• Record the VIN or original part number on every Tesla order line
• Never let a customer compare numbers across generations without a build-date check

7. The Bottom Line

Three rules cover the whole topic. Read a Tesla TPMS number as three blocks — base, revision, change level — and never treat a base change as a supersession. Confirm the generation by build date before you confirm the part number. And never publish or accept a cross-reference that does not state its revision group and its source.

The numbers that matter for Bluetooth-era cars are 1490701-01-B, 1490701-01-C, 1490750-01-A and 1490750-00-A. Everything else is either a different generation or an unverified claim.

Last updated: 3 November 2026. Reviewed against current production part numbers.