The Detex 103629 is the OEM cylinder housing built specifically for the ECL-230X exit control lock. If your ECL-230X device needs a cylinder housing replacement, this is the exact factory-spec part to order. Detex designates it as the IKC (Inside Key Control) cylinder housing, listed as item 1b in the official ECL-230X parts breakdown. It's a genuine Detex replacement, which means no guesswork on fitment, no modification, and no risk of misaligning the cam bridge that drives the deadbolt.

Which Detex ECL-230X Models Does Part Number 103629 Fit?

The 103629 cylinder housing fits the full ECL-230X product family from Detex. That includes the standard ECL-230X single-point deadbolt, the ECL-230X-TDB three-point locking configuration, the ECL-230X-TD two-point variant, and the ECL-230X-W weatherized version. It's also cross-referenced in the ECL-230D parts list, so if you're servicing an older paddle-style Detex exit device, confirm the fit against your specific unit's diagram before ordering.

The ECL-230X itself is a code-compliant, battery-alarmed exit control lock rated for secondary exits in commercial, institutional, and industrial buildings. It runs a 100-decibel alarm off a single 9-volt battery and accepts 5-pin through 7-pin standard and interchangeable core rim cylinders. The cylinder housing is what physically seats and retains that rim cylinder inside the lock body. When the housing cracks, wears out, or gets damaged during a forced-entry attempt, the entire key control function is compromised.

How Does the IKC Cylinder Housing Work in a Detex Exit Control Lock?

IKC stands for Inside Key Control. In the ECL-230X, the IKC cylinder housing holds the rim cylinder that lets authorized personnel lock and arm the deadbolt from inside the building. Inserting the IKC key and rotating it a full 360 degrees clockwise causes the cylinder's tailpiece to rotate, which moves the cam bridge and extends the deadbolt into the frame strike. That same action arms the 100-decibel alarm. Turning the key counter-clockwise retracts the bolt and disarms it.

The housing keeps the cylinder in precise alignment with the cam bridge. If the timing marks are off, or the tailpiece isn't trimmed to the right length for your installation, the bolt can bind or fail to engage the keeper fully. That's why the OEM part matters here, not a generic substitute. The Detex 103629 installs without any modification needed, keeping your installation clean and maintaining proper bolt engagement with the door frame.

Detex 103629 Cylinder Housing Specs and Part Information

The 103629 ships as a direct drop-in replacement for the ECL-230X IKC position. It works with standard 5-pin to 7-pin rim cylinders and interchangeable core configurations. The finish is standard gray, consistent with the rest of the ECL-230X series hardware. List price on this part is $10.00, and you're getting it here at $8.10 through authorized Detex distribution.

If you're doing a full service on a Detex ECL-230X unit, SecurityParts.com also stocks the companion components from the same parts diagram: the endcap bracket (103625), the endcap cover (103641-1), the siren bracket assembly (103650-1), and the pushpad sign (103647-13 for 30-inch doors or 103647-1 for the standard size). Ordering everything in one transaction cuts your shipping cost and gets the device back in service without waiting on multiple deliveries.