IWC · Pilot

Strap for Pilot's Watch Mark XV Spitfire Stainless Steel / Black / Bracelet

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

19mm
Lug width19 mm
Case diameter38 mm
ReferenceIW3253-12 (aka: IW325312)
FamilyPilot
MovementIWC caliber 37524 hours, minutes, seconds, world time | date
Year2003 - 2005
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 IW3253-12 (aka: IW325312)

Selected for the 19 mm lug width

All 19 mm straps →

The Pilot IW3253-12 (aka: IW325312), seen from the bench

The IWC Pilot ref. IW325312 is powered by the caliber 37524 with hour, minute, second, world time and date functions. The watch features 19mm lugs and belongs to the Pilot collection of the Swiss manufacturer. The movement offers complete aviation indications with an integrated world time complication.

Frequently asked questions

What is the lug width of the IWC Pilot IW3253-12?

The lug width of the IWC Pilot IW3253-12 is 19.00mm. This specification corresponds to the distance between the two lugs that support the strap. This is a rare dimension in the market, making it essential to verify compatibility before purchasing any replacement strap.

Which strap material pairs best with the Pilot IW3253-12?

Cognac or brown alligator represents the most harmonious aesthetic choice, enhancing contrast with the black dial. For intensive daily wear, calf leather with vegetable tanning offers comfort and natural patina development. If practicality is paramount, black FKM rubber is the most robust solution, eliminating the need for routine maintenance.

How do I change the strap on the IWC Pilot IW3253-12?

Strap replacement requires a specialised tool: the spring bar removal tool. Position the watch face-down on a soft surface, locate the pins at the case ends, and use the tool to gently push the pin out of its housing. Once the pin is removed, the strap slides free. The reverse procedure allows installation of the new strap. If you lack the proper tool, consult a specialist service centre.

Are 19mm aftermarket straps truly compatible with the Pilot IW3253-12?

Yes, with important qualifications. An aftermarket strap must be specifically manufactured for the 19mm lug width. Generic 18mm or 20mm straps will not fit correctly; the former will be loose, the latter forced onto the pins. Bespoke straps, such as those crafted by Casati Milano, guarantee certified compatibility for this rare dimension.

What is the expected lifespan of a natural leather strap on the Pilot IW3253-12?

A high-quality leather strap—alligator, vegetable-tanned calf, shell cordovan—maintains structural integrity for 3 to 7 years depending on intensity of wear, moisture exposure, and routine maintenance. An owner who regularly dries the strap after water contact and protects it from prolonged direct sunlight will observe longevity toward the upper limit. FKM rubber straps, by contrast, may last 5-10 years before requiring 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.

Request an appointment →

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