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### Vintage New Old Stock (NOS) Niehoff Ignition Dual Vacuum Advance
**Part Number Stamped on Housing:** 12378 (Calibration Code 8)
**Housing Profile:** Standard Narrow Rim (Not Wide-Band Style)
**Cross-References:** Autolite / Motorcraft 12370 series / Niehoff Ignition PartsUp for sale is a premium quality, vintage New Old Stock (NOS) Dual-Port Distributor Vacuum Advance Diaphragm, safely preserved in its original vintage red-and-white Niehoff box.This is a direct aftermarket replacement built to factory Autolite / Motorcraft structural specifications.#### Product Details & Features:
* **Housing Design:** Features the standard narrow-crimped rim zinc housing with standard flush hex-head calibration plug. (Note: This is the regular production line version, NOT the heavy wide-band performance style).
* **Dual-Vacuum Ports:** Specifically designed for classic multi-hose emissions configurations (advance and retard tracking).
* **Fitment Window:** Correct style for classic 1968, 1969, 1970, 1971, 1972, 1973, and 1974 Ford, Mercury, and Lincoln setups.
* **Common Engine Applications:** V8 platforms including 289, 302, 351 Windsor, 351 Cleveland, 390, and 428 engines running original Autolite point or early electronic distributors.#### Condition:
New Old Stock (NOS). The part has never been installed or bolted down. It exhibits minor cosmetic surface oxidation typical of natural vintage warehouse storage, which does not affect functional performance. The original box is included and shows classic vintage shelf wear. Please inspect the photos carefully to verify structural visual matches for your exact distributor arm setup before purchase.Shipped quickly and securely. Thanks for looking!
