Description
Vented thermostat kit for Mack E7 ASET (Application-Specific Engine Technology) inline-six engines. Replaces Mack 215SB169A (also 215SB169, 215SB322, 85111238). Ships as a paired kit with one 180°F-opening thermostat and one 185°F-opening thermostat plus seals — Mack ASET engines run a staged-opening setup with two thermostats per engine.
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | ETK-3299 |
| Part Type | Thermostat Kit (Vented, Staged) |
| Replaces OEM | Mack 215SB169A |
| Opening Temperatures | 180°F / 185°F (staged) |
| Vented | Yes |
| Engine Compatibility | Mack E7 ASET |
Kit Includes
- Thermostat — PAI EAS-3295-180-001 (180°F, qty 1)
- Thermostat — PAI EAS-3295-185-001 (185°F, qty 1)
- Seal — PAI EOS-3305 (OEM Mack 447GC216A, qty 2)
Cross References
This kit replaces or is equivalent to the following part numbers:
- Mack: 215SB169A, 215SB169, 215SB322, 85111238
Applications
This thermostat kit fits the following Mack engines:
- Mack E7 ASET (Application-Specific Engine Technology) — both AC and AI variants
Replace both thermostats and both seals at the same service interval. Mack E7 ASET runs a staged 180°F/185°F opening profile — installing one temperature thermostat alone will cause cooling-system imbalance.









