TAG Heuer · Aquaracer
Strap for Aquaracer 300M Calibre 5 43 Tortoise Blue
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Aquaracer WAY201P.FT6178
Selected for the 20 mm lug width · workshop selection
Grey Hammered Leather Strap with Ecru Stitching€98
Hammered Calfskin Strap Light Blue€98
Hammered Calfskin Watch Strap Green with Ecru Stitching€98
Red Suede Strap with Stitching — Milano Straps€90
Dark Brown Calfskin Military Strap€80
The Aquaracer WAY201P.FT6178, seen from the bench
Frequently asked questions
What is the lug width of the TAG Heuer Aquaracer WAY201P.FT6178?
The lug width of the TAG Heuer Aquaracer WAY201P.FT6178 is 20mm. This measurement represents the distance between the two metal attachment points where the strap is inserted. To verify correctly, measure from centre to centre of the lugs, ensuring the measuring device is perpendicular to the dial face. The 20mm width is TAG Heuer's standard for medium-to-large Aquaracer models, ranging from 41mm to 43mm case diameter.
Which strap is recommended for the WAY201P.FT6178?
Three primary materials are recommended for the Aquaracer WAY201P.FT6178. Alligator leather dyed black or navy blue creates elegant aesthetic contrast without compromising dial readability. Structured calf leather worked with vegetable tanning offers superior durability in humid environments. Shell cordovan represents a rare compromise: smooth to the touch, waterproof like rubber, and develops incomparable patina over time. NATO straps in technical polyester offer maximum practicality and full reversibility, ideal for sporting contexts.
How do you change the strap on a TAG Heuer Aquaracer?
Changing the Aquaracer strap depends on attachment type. If your watch has undergone recent official servicing, it likely features spring bars: insert the dedicated tool into the lateral slot and extract the bar outward. If the original model features screws, use a precision screwdriver to unscrew the attachments. Insert the new strap's end into the lugs until you feel the locking click. Adjust total length so the strap fully covers the wrist without overlapping the case. For leather straps, allow 24 hours settling before use.
Are aftermarket straps compatible with the WAY201P.FT6178?
Yes, any strap with a 20mm lug width is compatible with the WAY201P.FT6178. Compatibility is guaranteed by international manufacturing tolerances (±0.2mm between bars). However, verify strap thickness (4.5–6mm is ideal) to avoid excessive slippage in the lugs. European handcrafted straps allow customisation in leather selection, specific lengths, and stitching colours, providing superior aesthetic synergy compared to industrial straps.
How long does a leather strap last on a diving watch?
Leather strap durability depends on material and usage patterns. An alligator strap dyed with vegetable tanning, subjected to occasional freshwater contact, maintains structural integrity for 18–24 months. Shell cordovan, being denser, reaches 28–36 months. If the watch undergoes frequent diving or prolonged saltwater contact, duration reduces to 12–15 months. Avoid full submersion with natural leather straps and dry immediately after water contact. NATO straps in technical fabric resist water indefinitely, though requiring more frequent replacement for aesthetic reasons.
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
