1962-73 Wide Flute Mopar Ford Headlamp Headlight Bulb Set Of 4 4001 4002 on 2040-parts.com

Get dressed out with proper wide flute sealed beams and rid your ride of those butt-ugly late model headlamps.  Women will swoon, little children will speak your name with reverence, and men will line up to shake your hand.  Mother Mopar didn't use narrow flute bulbs before 1974 and I don't think Ford did either. 

You're buying four new-in-the-box and tested vintage 12 volt Westinghouse bulbs for cars with the 4 headlamp system.  There are 2 High-Low beam three-prong 4002 and 2 High beam two-prong 4001 wide flute bulbs appropriate for sixties and early seventies cars and trucks.

Westinghouse began production of this style headlamp in May of 1962.  These bulbs would not be appropriate for cars produced before then.

*NOTE:  I don't pad your shipping bill with my eBay fees.  I ship headlamps by USPS Priority mail.  It's insured and faster and cheaper than surface mail.  Plus, your lamps don't make the trip under a 70 pound box of rocks, books, or anvils.

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Further enlightenment and shopping tips:

• General Electric (50%), Tung-Sol (25%), and Westinghouse (25%) all supplied headlamp bulbs to Chrysler Corporation through the sixties and seventies.  Ford used many Westinghouse bulbs.  AMC (Tung-Sol) and General Motors (Guide) did not.
• Fluting pattern refers to the grid of ridges in the front glass lens.  Wide flutes are 1/4" wide and narrow flutes are 1/8" wide.  Narrow flute bulbs have some wide flutes.  However, wide flute bulbs have NO narrow flutes.  See the last four pictures above for a couple of narrow flute bulbs and two side-by-side comparison pictures.
• The vast majority of GE bulbs sold in the blue and yellow boxes (see pic above for an example) are narrow flute.
  
• ALL of the Westinghouse 4000 and 4001 headlamps in yellow boxes have narrow flutes.  They also sold narrow flute bulbs in the blue boxes, so watch out for those.
  
• If you have hideaway headlamps, or have a 1974 or later Mopar, or are buying for your mother-in-law, save yourself some bucks and pick up some inexpensive narrow flute bulbs.  $10 (plus shipping) is all you'll want to pay for a narrow flute bulb.
• If the bulb is in a yellow box (GE, Philips, Westinghouse) it is a narrow flute bulb.
• If the bulb is in a box that says "Also Replaces 5001" it is a narrow flute bulb.
  
• Encourage your seller to test the bulb with a battery and a jumper wire before you lay down your hard-earned cash.  My experience with new old stock bulbs is that they are usually good.  Unfortunately, I've had a few expensive failures.  Failure is caused by leakage of the shielding gas.   When the bulbs are manufactured, they are first evacuated and then filled with an inert gas mix comprising argon and nitrogen.  If it leaks out, 12 volts to the rear prongs will burn out the tungsten filament in a few seconds, filling the bulb with white smoke, and you're left with zilch.  New bulbs will almost always test good with an ohmmeter, but this test tells you nothing about whether the gas has leaked out.

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