TAG Heuer · Formula 1

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

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter43 mm
ReferenceCAZ101AN.BA0842
FamilyFormula 1
MovementRonda caliber 5040.D hours, minutes, small seconds | date | Chronograph
Year2023
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 CAZ101AN.BA0842

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Formula 1 CAZ101AN.BA0842, seen from the bench

The TAG Heuer Formula 1 CAZ101AN.BA0842 is a 43 mm stainless steel sports watch launched in 1986. It features a Ronda caliber 5040.D quartz chronograph movement with small seconds counter and date window. The case is 316L stainless steel with screw-down caseback and 300 meters water resistance. The watch is available with integrated H-link bracelet or as a strap version with 20 mm lug width.

Frequently asked questions

What is the lug width of the TAG Heuer Formula 1 CAZ101AN.BA0842?

The TAG Heuer Formula 1 CAZ101AN.BA0842 features a 20mm lug width, the historic standard for the Formula 1 collection. This measurement provides access to a wide variety of aftermarket straps in leather, rubber and textile, maintaining visual proportions with the 43mm case. Always verify the exact model reference, as certain Formula 1 variants may feature different lug attachments.

Which strap is best suited for the TAG Heuer Formula 1 CAZ101AN.BA0842?

For this sports chronograph, we recommend leather straps featuring robust construction with tone-on-tone stitching, or alligator leather for those seeking refined aesthetics. High-resistance materials such as calf, deer or alligator balance the aggressive 43mm case and integrated bracelet architecture. FKM rubber straps remain the most versatile choice for daily wear. Milano Straps offers dedicated 20mm collections with personalisation in initials and stitching colour.

How do you change the strap on a TAG Heuer Formula 1 CAZ101AN.BA0842?

The CAZ101AN.BA0842 utilises standard 20mm spring bar attachments. To remove the strap, employ a small springbar tool by gently inserting the flat tip between the case lug and strap, compressing the internal spring mechanism and sliding the strap outward. Proceed with care to avoid scratching the case surface. Insert the new strap by aligning the lugs and pushing until the spring mechanism clicks into place. Verify secure fastening before wearing.

Are compatible aftermarket straps available for the TAG Heuer Formula 1 CAZ101AN.BA0842?

Yes. The 20mm lug width is standard within the sports watch segment, permitting strap pairing with numerous manufacturers worldwide. Milano Straps offers a comprehensive collection of 20mm straps customisable in Italian leather, alligator skin and technical rubber, with expedited shipping available. The Casati Milano atelier also specialises in bespoke strap creation with leather selection and WhatsApp progress updates.

What is the typical lifespan of a leather strap for the TAG Heuer Formula 1 CAZ101AN.BA0842?

A quality leather strap, subject to normal wear conditions, retains aesthetic and functional characteristics for 2–3 years. Longevity depends upon usage frequency, exposure to perspiration and UV radiation, and periodic maintenance with appropriate conditioning products. Vegetable-tanned materials develop an appreciable patina, whilst alligator and shell cordovan straps age with greater nobility. Milano Straps provides an 18-month warranty on all bespoke atelier-produced straps.

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.

Request an appointment →

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