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Kicker KSS5 (51KSS504)

400W Peak (200W RMS) 5.25" KS Series 2-way 4-ohm Component Speaker System (KSS504)

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400W Peak (200W RMS) 5.25" KS Series 2-way 4-ohm Component Speaker System (KSS504)

• 200 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Rear Deck Corner
1
Was $279.99 Details
Save $80.03
$199.96 /set

In stock

Only 3 Left!

• 200 watts Peak Each, 100 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Hertz DSK 130.3

240W Peak (120W RMS) 5.25” Dieci Series 2-way 4-ohm Component Speaker System

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240W Peak (120W RMS) 5.25” Dieci Series 2-way 4-ohm Component Speaker System

• 120 watts Peak Each, 60 watts RMS Each
• 1" PEI (Polyetherimide) Dome-Cone tweeters with high-energy neodymium magnets
• Water-repellent Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Rear Deck Corner
Was $230.00 Details
$199.99 /set

• 120 watts Peak Each, 60 watts RMS Each
• 1" PEI (Polyetherimide) Dome-Cone tweeters with high-energy neodymium magnets
• Water-repellent Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

Infinity REF-3032cfx (REF3032CFXAM)

150W Peak (50W RMS) 3.5" Reference Series 2 Way Coaxial 3-ohm Speakers

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150W Peak (50W RMS) 3.5" Reference Series 2 Way Coaxial 3-ohm Speakers

• 75 watts Peak Each, 25 watts RMS Each
• Textile Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
13
Was $129.95 Details
$69.99 /pair

In stock

• 75 watts Peak Each, 25 watts RMS Each
• Textile Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Limited time!

Rockford Fosgate P132

80W Peak (40W RMS) 3.5” Punch Series 2 Way Full Range Coaxial 4-ohm Speakers

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80W Peak (40W RMS) 3.5” Punch Series 2 Way Full Range Coaxial 4-ohm Speakers

• 40 watts Peak Each, 20 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
38
Was $89.99 Details
Save 11.11%
$79.99 /pair

In stock

Like New from: $62.93

• 40 watts Peak Each, 20 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Limited time!

Kicker CSC35 (46CSC354)

180W Peak (60W RMS) 3.5” CS Series 2-way 4-ohm Coaxial Speakers

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180W Peak (60W RMS) 3.5” CS Series 2-way 4-ohm Coaxial Speakers

• 90 watts Peak Each, 30 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material with EVC (Extended Voice Coil) technology
• Impedance: 4 ohm
• Sensitivity: 88 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
12
Was $69.99 Details
Save 27.19%
$50.96 /pair

In stock

• 90 watts Peak Each, 30 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material with EVC (Extended Voice Coil) technology
• Impedance: 4 ohm
• Sensitivity: 88 dB

Limited time!

Kicker KSC35 (51KSC3504)

200W Peak (100W RMS) 3.5" KS Series 2 Way Coaxial 4-ohm Speakers

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200W Peak (100W RMS) 3.5" KS Series 2 Way Coaxial 4-ohm Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
4
Was $89.99 Details
Save 24.48%
$67.96 /pair

In stock

• 100 watts Peak Each, 50 watts RMS Each
• 1/2" Silk Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

JBL Club 34F (JBLSPKCB34F)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

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150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

• 75 watts Peak Each, 25 watts RMS Each
• Silk Edge Driven Dome tweeters
• UV-Resistant Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 89 dB

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empty

found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
3
Was $109.95 Details
$79.95 /pair

In stock

• 75 watts Peak Each, 25 watts RMS Each
• Silk Edge Driven Dome tweeters
• UV-Resistant Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 89 dB

Limited time!

Kicker CSC5 (46CSC54)

450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

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450W Peak (150W RMS) 5.25” CS Series 2 Way Coaxial 4-ohm Speakers

• 225 watts Peak Each, 75 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters with neodymium magnets
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Rear Deck Corner
5
Was $99.99 Details
Save $23.03
$76.96 /pair

In stock

Cerwin-Vega H735

500W Peak (60W RMS) 3.5" HED Series 2-way 4-ohm Coaxial Car Speakers

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500W Peak (60W RMS) 3.5" HED Series 2-way 4-ohm Coaxial Car Speakers

• 250 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Graphite-Injected Reinforced Spun cone material
• Impedance: 4 ohm
• Sensitivity: 84.5 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
32
$54.99 /pair

In stock

• 250 watts Peak Each, 30 watts RMS Each
• 1" PEI (Polyetherimide) Balanced Dome tweeters
• Graphite-Injected Reinforced Spun cone material
• Impedance: 4 ohm
• Sensitivity: 84.5 dB

Pioneer TS-A878

120W Peak (30W RMS) 3.5" A-Series 2-way 4-ohm Coaxial Speakers for select GM, Ford and Volkswagen models

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120W Peak (30W RMS) 3.5" A-Series 2-way 4-ohm Coaxial Speakers for select GM, Ford and Volkswagen models

• 60 watts Peak Each, 15 watts RMS Each
• Custom-fit for select GM, Ford and Volkswagen models
• 1" PEI (Polyetherimide) Dome tweeters
• Carbon Graphite IMPP Interlaced Aramid Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

PRIMETIME SALE! Save at checkout!
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empty

found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
31
Was $70.00 Details
$50.00 /pair

In stock

• 60 watts Peak Each, 15 watts RMS Each
• Custom-fit for select GM, Ford and Volkswagen models
• 1" PEI (Polyetherimide) Dome tweeters
• Carbon Graphite IMPP Interlaced Aramid Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Kicker DSC350 (43DSC3504)

160W Peak (40W RMS) 3.5" DS Series 2-way 4-ohm Coaxial Car Speakers

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160W Peak (40W RMS) 3.5" DS Series 2-way 4-ohm Coaxial Car Speakers

• 80 watts Peak Each, 20 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material with EVC (Extended Voice Coil) technology
• Impedance: 4 ohm
• Sensitivity: 88 dB

PRIMETIME SALE! Save at checkout!
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empty

found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
14
Was $59.99 Details
$49.99 /pair

In stock

• 80 watts Peak Each, 20 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material with EVC (Extended Voice Coil) technology
• Impedance: 4 ohm
• Sensitivity: 88 dB

Limited time!

Kenwood KFC-835C

80W Peak (20W RMS) 3.5" KFC Series 2 Way Coaxial 4-ohm Speakers

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80W Peak (20W RMS) 3.5" KFC Series 2 Way Coaxial 4-ohm Speakers

• 40 watts Peak Each, 10 watts RMS Each
• Paper Dome tweeters
• Whizzer cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
31
Was $70.00 Details
Save 64.29%
$25.00 /pair

In stock

• 40 watts Peak Each, 10 watts RMS Each
• Paper Dome tweeters
• Whizzer cone material
• Impedance: 4 ohm
• Sensitivity: 89 dB

JL Audio C2-350x

80W Peak (50W RMS) 3.5” C2 Series 2-way 4-ohm Coaxial Car Speakers

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80W Peak (50W RMS) 3.5” C2 Series 2-way 4-ohm Coaxial Car Speakers

• 40 watts Peak Each, 25 watts RMS Each
• 3/4" Silk Dome tweeters
• Injection-molded Polypropylene with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

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found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
15
$149.99 /pair

In stock

Like New from: $127.49

• 40 watts Peak Each, 25 watts RMS Each
• 3/4" Silk Dome tweeters
• Injection-molded Polypropylene with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB

Kicker DSC50 (43DSC504)

400W Peak (100W RMS) 5.25" DS Series 2-way 4-ohm Coaxial Car Speakers (DSC504)

DSC50 big
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400W Peak (100W RMS) 5.25" DS Series 2-way 4-ohm Coaxial Car Speakers (DSC504)

• 200 watts Peak Each, 50 watts RMS Each
• 1/2" PEI (Polyetherimide) Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 90 dB

PRIMETIME SALE! Save at checkout!
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empty

found car based on your search
Fits the following location in your 1978 300D
  • Rear Deck Corner
17
Was $79.99 Details
$73.99 /pair

In stock

Limited time!

Rockford Fosgate Punch P152

160W Peak (80W RMS) 5.25" Punch Series 2-way 4-ohm Full Range Car Speakers

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160W Peak (80W RMS) 5.25" Punch Series 2-way 4-ohm Full Range Car Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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empty

found car based on your search
Fits the following location in your 1978 300D
  • Rear Deck Corner
27
Was $109.99 Details
Save $10.00
$99.99 /pair

In stock

Like New from: $70.91

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

Soundstream (PPI) MAS.522

200W Peak (150W) RMS 5.25" MAS Series 2-Ohm 2-Way Coaxial Motorcycle Speakers

MAS.522 big
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200W Peak (150W) RMS 5.25" MAS Series 2-Ohm 2-Way Coaxial Motorcycle Speakers

• 75 watts RMS Each
• 1" Titanium Dome Tweeters
• Polypropylene Cone
• Impedance: 2 ohm
• Sensitivity: 92 dB

PRIMETIME SALE! Save at checkout!
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VIP Product Get $27.00 in rewards to spend later

empty

found car based on your search
Fits the following location in your 1978 300D
  • Rear Deck Corner
1
Was $349.99 Details
$269.99 /pair

In stock

Only 3 Left!

• 75 watts RMS Each
• 1" Titanium Dome Tweeters
• Polypropylene Cone
• Impedance: 2 ohm
• Sensitivity: 92 dB

Soundstream (PPI) MAS.524

200W Peak (150W) RMS 5.25" MAS Series 4-Ohm 2-Way Coaxial Motorcycle Speakers

MAS.524 big
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200W Peak (150W) RMS 5.25" MAS Series 4-Ohm 2-Way Coaxial Motorcycle Speakers

• 75 watts RMS Each
• 1" Titanium Dome Tweeters
• Polypropylene Cone
• Impedance: 4 ohm
• Sensitivity: 92 dB

PRIMETIME SALE! Save at checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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VIP Product Get $27.00 in rewards to spend later

empty

found car based on your search
Fits the following location in your 1978 300D
  • Rear Deck Corner
1
Was $349.99 Details
$269.99 /pair

In stock

Limited time!

Infinity REF307F (INFSPKRF307FUS)

150W Peak (50W RMS) 3.5" Reference Series 2 Way Coaxial 3-ohm Speakers

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150W Peak (50W RMS) 3.5" Reference Series 2 Way Coaxial 3-ohm Speakers

• 75 watts Peak Each, 25 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

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empty

found car based on your search
Fits the following location in your 1978 300D
  • Dash Corner
3
Was $129.95 Details
Save $50.00
$79.95 /pair

In stock.

• 75 watts Peak Each, 25 watts RMS Each
• 1/2" Textile Balanced Dome Tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

Rockford Fosgate PRIME R152-S

160W Peak (80W RMS) 5.25" Prime Series 2-way 4-ohm Component Speaker System

R152-S big
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160W Peak (80W RMS) 5.25" Prime Series 2-way 4-ohm Component Speaker System

• 80 watts Peak Each, 40 watts RMS Each
• 1" Mylar Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

PRIMETIME SALE! Save at checkout!
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VIP Product Get $8.00 in rewards to spend later

empty

found car based on your search
Fits the following location in your 1978 300D
  • Rear Deck Corner
26
$79.99 /set

In stock

Like New from: $63.99

• 80 watts Peak Each, 40 watts RMS Each
• 1" Mylar Balanced Dome tweeters
• Mica Injected Polypropylene - MIPP cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

JBL Stage3 527F (STAGE3527FAM)

400W Peak (80W RMS) 5.25" Stage3 Series 2-way Coaxial 3-ohm Speakers

Stage3 527F big
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400W Peak (80W RMS) 5.25" Stage3 Series 2-way Coaxial 3-ohm Speakers

• 200 watts Peak Each, 40 watts RMS Each
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.

empty

found car based on your search
Fits the following location in your 1978 300D
  • Rear Deck Corner
4
Was $89.95 Details
$69.95 /pair

In stock

Used from: $51.79

• 200 watts Peak Each, 40 watts RMS Each
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

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    FAQ for your 1978 300D

    Q: Can I upgrade the factory stereo system in my 1978 Mercedes-Benz 300D?

    A: Yes you can improve your sound in your 300D by upgrading your speakers and/or adding an amplifier. You may also be able to update the stereo and main display in your 1978 300D if there is a dash kit and harness solution available.

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