TAG Heuer · Formula 1

Strap for Formula 1 Chronograph Quartz Stainless Steel / Racing Red / Bracelet

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter43 mm
ReferenceCAZ101Y.BA0842
FamilyFormula 1
MovementRonda caliber 5040.D Hours, Minutes, Small Seconds | Date | Chronograph
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Formula 1 CAZ101Y.BA0842

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Formula 1 CAZ101Y.BA0842, seen from the bench

The TAG Heuer Formula 1 CAZ101Y.BA0842 is a 43mm stainless steel chronograph featuring a Ronda 5040.D quartz movement. The satin-finished steel case houses a motorsport-inspired dial with three chronograph subdials, date window, and applied indices. The 22mm lug width provides optimal ergonomic proportions for this model size and accommodates straight lugs, ensuring proper mechanical coupling with standard straps without stress on fastening pins.

Frequently asked questions

What is the lug width of the TAG Heuer Formula 1 CAZ101Y.BA0842?

The lug width of the TAG Heuer Formula 1 CAZ101Y.BA0842 is 22 millimetres. This measurement is specific to this model and is not interchangeable with standard straps. Correct measurement is taken from centre to centre of the lug hole, perpendicular to the dial, using a digital calliper.

Which strap is recommended for the TAG Heuer Formula 1 CAZ101Y.BA0842?

For the CAZ101Y.BA0842, straps in alligator or shell cordovan with vegetable tanning are recommended, as they amplify the satined case's aesthetic severity and develop patina over time. For intensive sporting use, vegetable-tanned calf offers excellent resistance to atmospheric agents. Rubber or NATO textile straps remain functional options for extreme environments. All compatible 22mm straps are available with personalisation options: custom length, initials, and stitching thread choice.

How do I change the strap on the TAG Heuer Formula 1 CAZ101Y.BA0842?

The CAZ101Y.BA0842 features standard straight lugs with a lug hole depth of approximately 5.2mm. To change the strap: 1) remove the fixing pins using a strap removal tool; 2) position the new 22mm strap, aligning it perpendicularly to the lugs; 3) reinsert the pins until stable. The strap's cross-sectional profile must respect the lug hole geometry to ensure secure fitting without vertical play.

Which aftermarket straps are compatible with the TAG Heuer Formula 1 CAZ101Y.BA0842?

All 22mm saddle-cut straps are compatible with the CAZ101Y.BA0842, provided they respect the lug hole depth (5.2mm). Custom straps from specialist artisans (such as milanostraps.it) offer choice of noble materials: alligator, cordovan, vegetable-tanned calf, plus personalisation options including bespoke length, embossed initials, and stitching thread selection. Straps custom-made by the Casati Milano atelier come with an 18-month guarantee.

How long does a leather strap last on the TAG Heuer Formula 1 CAZ101Y.BA0842?

Leather strap durability depends on material and intensity of use. An alligator or vegetable-tanned shell cordovan strap typically lasts 5-7 years with regular wear, thanks to superior structural density. Calf leather lasts 3-5 years before replacement. The patina that develops (surface oxidation, subtle tonal change) does not compromise functionality but is a natural aesthetic phenomenon. Straps subjected to constant humidity or intensive wear require more frequent replacement.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only