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4 400 tube

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Eimac 400a vacuum - tube, radio

Eimac 400a vacuum - tube, radio

$75.00
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Eimac 400z transmitting tube - eimac,

Eimac 400z transmitting tube - eimac,

$119.95
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Eimac 400a 400r - eimac, 4-400a/4-400r

Eimac 400a 400r - eimac, 4-400a/4-400r

$350.00
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400a 8438 amperex transmit - 8438,

400a 8438 amperex transmit - 8438,

$300.00
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400a 8438 amperex transmit - 8438,

400a 8438 amperex transmit - 8438,

$250.00
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Amperex 400b 7527 power - amperex,

Amperex 400b 7527 power - amperex,

$64.99
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Vintage eimac 400a amplifier - 4-400a,

Vintage eimac 400a amplifier - 4-400a,

$75.00
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Amperex 400a vacuum large - ?,

Amperex 400a vacuum large - ?,

$74.95
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Amperex 400c electron - amperex,

Amperex 400c electron - amperex,

$199.90
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Lot vintage penta labs - penta,

Lot vintage penta labs - penta,

$200.00
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Vacuum tube 2kw 225ma 350w - 2kw,

Vacuum tube 2kw 225ma 350w - 2kw,

$74.99
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400c electron tube pin - tube,

400c electron tube pin - tube,

$49.95
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Lot 400a vacuum tubes - of, 4-400a

Lot 400a vacuum tubes - of, 4-400a

$75.00
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Swagelok 400 set - b-400-set, brass

Swagelok 400 set - b-400-set, brass

$199.95
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Swagelok 400 set nylon - ny-400-set, 1/4"

Swagelok 400 set nylon - ny-400-set, 1/4"

$85.00
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Swagelok 400 4 tube - swagelok, hc-400-7-4

Swagelok 400 4 tube - swagelok, hc-400-7-4

$200.00
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Eimac 400a transmitting - eimac,

Eimac 400a transmitting - eimac,

$169.99
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Pin tube socket ceramic - pin,

Pin tube socket ceramic - pin,

$39.99
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Pair eimac 400c - pair,

Pair eimac 400c - pair,

$49.00
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Eimac 400a transmitting - eimac,

Eimac 400a transmitting - eimac,

$79.99
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Eimac vacuum tube - eimac,

Eimac vacuum tube - eimac,

$45.99
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Swagelok 400 61 tube - ss,

Swagelok 400 61 tube - ss,

$165.00
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1957 western electric - 4, ks

1957 western electric - 4, ks

$169.15
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Eimac vacuum tube - eimac,

Eimac vacuum tube - eimac,

$147.99
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Penta labs raytheon vacuum - penta,

Penta labs raytheon vacuum - penta,

$99.99
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36b nos 4cx400a new - 4cx400a,

36b nos 4cx400a new - 4cx400a,

$179.00
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Eimac 4cx300y 8561 400w - eimac,

Eimac 4cx300y 8561 400w - eimac,

$44.95
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Eimac 400 socket lot - sk-400,

Eimac 400 socket lot - sk-400,

$140.00
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Qty x 19 tire tube - 4",

Qty x 19 tire tube - 4",

$48.99
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Swagelok brass union fitting - union,

Swagelok brass union fitting - union,

$299.99
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Swagelok stainless steel - stainless,

Swagelok stainless steel - stainless,

$307.33
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Eimac vacuum tube - eimac,

Eimac vacuum tube - eimac,

$185.95
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400 brass swagelok tube - swagelok,

400 brass swagelok tube - swagelok,

$45.00
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Penta labs 400a - pl-4-400a, electron

Penta labs 400a - pl-4-400a, electron

$129.95
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Swagelok tube - 1/4",

Swagelok tube - 1/4",

$26.79
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Bazooka bt8024dvc series - bt8024dvc, 8"

Bazooka bt8024dvc series - bt8024dvc, 8"

$179.99
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Eppendorf 5702 400 - 5702, rpm

Eppendorf 5702 400 - 5702, rpm

$1599.99
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Vintage penta labs 400a - vintage, pl-4-400a

Vintage penta labs 400a - vintage, pl-4-400a

$112.99
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Vintage nos swagelock - vintage,

Vintage nos swagelock - vintage,

$375.00
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Eimac 400a power tube - eimac, rf

Eimac 400a power tube - eimac, rf

$159.99
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Vintage eimac jan - eimac, jan-8438

Vintage eimac jan - eimac, jan-8438

$90.00
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Tube ferrule sets 316ss - 1/4,

Tube ferrule sets 316ss - 1/4,

$33.60
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400 1 4 tube x - 15,

400 1 4 tube x - 15,

$90.00
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T400 reddington flyrod combo - ,

T400 reddington flyrod combo - ,

$149.99
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Swagelok 400 1 - ss-400-4, ,

Swagelok 400 1 - ss-400-4, ,

$26.00
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Jan 8438 400a - military, rf

Jan 8438 400a - military, rf

$174.99
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Microbrush tube series - series,, fine

Microbrush tube series - series,, fine

$108.99
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Lot swagelok 1 4 - 10:,

Lot swagelok 1 4 - 10:,

$119.99
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Swagelok 400 brass union - b-400-4,

Swagelok 400 brass union - b-400-4,

$20.00
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Swagelok 400 4tmt - swagelok, /

Swagelok 400 4tmt - swagelok, /

$22.50
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Lot swagelok 400 1 - 6,

Lot swagelok 400 1 - 6,

$99.99
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Swagelok wvcr 6 400 - swagelok, ss-4-wvcr-6-400

Swagelok wvcr 6 400 - swagelok, ss-4-wvcr-6-400

$62.98
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Vtg amperex eimac 400a - &,

Vtg amperex eimac 400a - &,

$199.99
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400a jan cim 6238 eimac - jan-cim,

400a jan cim 6238 eimac - jan-cim,

$120.00
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Ceramic vacuum tube socket for - vacuum,

Ceramic vacuum tube socket for - vacuum,

$19.95
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4t400 400va 400vx2 6 3v - as-4t400, +

4t400 400va 400vx2 6 3v - as-4t400, +

$98.00
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Nos vintage sprague - sprague, black

Nos vintage sprague - sprague, black

$200.00
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Eimac 400 vacuum - sk-400, tube

Eimac 400 vacuum - sk-400, tube

$95.00
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Swagelok brass elbow - 5,

Swagelok brass elbow - 5,

$37.89
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400c eimac radio electron - 4-400c,

400c eimac radio electron - 4-400c,

$58.00
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Pair 500zg 4 - 4-400a, tube

Pair 500zg 4 - 4-400a, tube

$36.00
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Eimac 400 socket - eimac, sk-400

Eimac 400 socket - eimac, sk-400

$50.00
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Western electric 13686 - 4, ks

Western electric 13686 - 4, ks

$169.15
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Rca electron 8438 400a - electron,

Rca electron 8438 400a - electron,

$249.99
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500zg 400a tube socket - 3-500zg,

500zg 400a tube socket - 3-500zg,

$18.00
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Pair amperex 400ax - 400ax, tubes

Pair amperex 400ax - 400ax, tubes

$420.00
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New baileigh ind rotary - new,

New baileigh ind rotary - new,

$595.00
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Eimac 410 tube socket for - eimac,

Eimac 410 tube socket for - eimac,

$55.00
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Swagelok 400 - swagelok, ss-400-6

Swagelok 400 - swagelok, ss-400-6

$34.99
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New box tung sol - in, tung-sol

New box tung sol - in, tung-sol

$180.00
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Amperex 400a nos nib - amperex, 4-400a

Amperex 400a nos nib - amperex, 4-400a

$498.65
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Airaid 100 400 - airaid, u-build-it

Airaid 100 400 - airaid, u-build-it

$157.99
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400 tube vacuum - 4-400, for

400 tube vacuum - 4-400, for

$176.00
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Replacement trigger sprayers - replacement,

Replacement trigger sprayers - replacement,

$288.00
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Lot swagelok ss - of,

Lot swagelok ss - of,

$175.00
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New pack swagelok 400 - 5,

New pack swagelok 400 - 5,

$60.00
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Eimac 400b vintage - eimac, 4-400b

Eimac 400b vintage - eimac, 4-400b

$199.99
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Westinghouse type 6af4a vacuum - westinghouse,

Westinghouse type 6af4a vacuum - westinghouse,

$9.99
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Eimac 400a electron - 4-400a,

Eimac 400a electron - 4-400a,

$265.00
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Pieces ceramic tube - of,

Pieces ceramic tube - of,

$62.95
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Swagelok 400 4 tube - ss-400-1-2, 1/4"

Swagelok 400 4 tube - ss-400-1-2, 1/4"

$60.00
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Airaid 100 400 - 4", universal

Airaid 100 400 - 4", universal

$157.99
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Eimac 400c electron - eimac,

Eimac 400c electron - eimac,

$325.00
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Lot swagelok ss 400 p - swagelok, ss-400-p

Lot swagelok ss 400 p - swagelok, ss-400-p

$60.00
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Swagelok monel alloy - 1,

Swagelok monel alloy - 1,

$109.89
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Swagelok tube x - swagelok, 1/4”

Swagelok tube x - swagelok, 1/4”

$17.05
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400a 400 eimac - 4-400,

400a 400 eimac - 4-400,

$282.62
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Pair national ceramic tube - pair,

Pair national ceramic tube - pair,

$29.00
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Miller cylinder tube - 4", end

Miller cylinder tube - 4", end

$46.86
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400mm aluminum - 400mm,

400mm aluminum - 400mm,

$36.99
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4t320 400va 320vx2 - -, 6.3v

4t320 400va 320vx2 - -, 6.3v

$98.00
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4pcs 400mm flexible - 400mm,

4pcs 400mm flexible - 400mm,

$20.80
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Vintage unbranded 3827 - vintage, yo-3827

Vintage unbranded 3827 - vintage, yo-3827

$29.00
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Swagelok brass elbow - 12-,

Swagelok brass elbow - 12-,

$89.89
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Swagelok 400 4 - ss-400-7-4, female

Swagelok 400 4 - ss-400-7-4, female

$99.00
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Exhaust system muffler slip - slip, on

Exhaust system muffler slip - slip, on

$74.59
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📊96 listings · from $9.99 · avg $148.58
⚠️ These listings were last updated more than 10 days ago. Search for fresh listings

Browse 96 4 400 tube listings currently in our index. Prices range from $9.99 to $1599.99, with an average of $148.58. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about 4 400 tube →

Try this: mackie parts | ecc85 tube | luxman r 117 | concept stereo receiver | sansui g 9000 | pioneer sx receivers | mcintosh c22 | yamaha psr s970 | maxi matcher | tieline

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Everything you need to know about 4 400 tube

Whether you are looking for a brand-new or second-hand 4 400 tube, eBay offers one of the largest selections available online. With 96 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $9.99, while premium listings can reach $1599.99 — giving you a wide budget spread to work with. The average price of $148.58 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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