IWC · Pilot

Strap for Pilot's Watch Chronograph Mecaquartz Stainless Steel / Black / Bracelet

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

18mm
Lug width18 mm
Case diameter36 mm
ReferenceIW3741-02 (aka: IW374102)
FamilyPilot
MovementJaeger-LeCoultre caliber 631 hours, minutes, small seconds | date | Chronograph
Year1993 - 2004
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 Pilot IW3741-02 (aka: IW374102)

Selected for the 18 mm lug width

All 18 mm straps →

The Pilot IW3741-02 (aka: IW374102), seen from the bench

The Pilot IW374102 features the Jaeger-LeCoultre 631 caliber with hour, minute, small seconds, date and chronograph functions. The 18mm lug watch is part of IWC's Pilot collection. The movement offers date indication in addition to the classic chronograph functions.

Frequently asked questions

What is the lug width of the IWC Pilot IW3741-02?

The lug width of the IWC Pilot IW3741-02 is 18 millimetres. This dimension is specific to the model and requires straps purpose-built for this width. You can verify the measurement using a digital calliper, measuring the space between the lug holes (the external points where the strap attaches). An incorrectly-sized strap will cause anomalous movement and compromise the overall aesthetics of the timepiece.

What is the best strap for the IWC Pilot IW3741-02?

The optimal choice depends on your intended use. For formal wear and elegance, we recommend vegetable-tanned alligator in dark brown or cognac tones, which dialogues beautifully with the watch's stainless steel case. For daily wear and versatility, full-grain calf leather in medium brown offers superior tactile comfort and durability. For sporting activities, cordura NATO in anthracite grey is the pragmatic choice. What matters most is selecting leather of superior quality, as the strap encounters your skin daily and must justify that intimate contact.

How do you change the strap on the IWC Pilot IW3741-02?

Strap removal is accomplished by extracting the spring bars (the spring-loaded pins securing the strap to the lugs). You require a specialist tool called a 'spring bar tool' or 'strap remover', available from specialised horology retailers. We recommend working on a soft surface to prevent scratches to the case. If uncertain of your technique, entrust the operation to a professional watchmaker to ensure the chronograph is not damaged during the process.

Which aftermarket straps are compatible with the IWC Pilot IW3741-02?

Any strap with an 18-millimetre lug width is compatible with the IWC Pilot IW3741-02. Specialised retailers—such as milanostraps.it—stock hundreds of options in alligator, calf, shell cordovan, NATO and synthetic rubber. Always verify that your chosen strap carries precisely 18mm lug width and that its construction quality matches the professional calibre of this chronograph. Straps with stainless steel deployants represent the optimal compromise between practicality and aesthetics.

How long does a leather strap last on the IWC Pilot IW3741-02?

Leather strap longevity depends upon material quality, frequency of wear and maintenance discipline. Superior-quality alligator or full-grain calf leather, worn daily with proper care (periodic cleaning and conditioning), typically lasts 3–5 years. Shell cordovan, owing to its dense structure, may endure 5–7 years. Cordura NATO straps match alligator durability but resist moisture superior. Casati Milano offers 18-month warranty on bespoke straps, with subsequent restoration and regeneration available.

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