Garage
Shop

See all parts that fit your 1998 ES300

Sundown Audio U-18 v.2 D4 18" (U18V2D4)

4000W Peak (2000W RMS) 18" U Series Dual 4-ohm Car Subwoofer (SW-UV218D4)

Sundown Audio
Shop all Sundown Audio
highlight-star-icon

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 4 ohm
• Pressed Paper Cone
• Double-Stitched Surround
• Mount depth: 10"
• Sensitivity: 88.87 dB

Learn more about the uv218d4
Universal fit Icon

Universal – fits most vehicles.

Similar items | Update vehicle | Vehicle store
List price $863.99
Thanks , You Pay:
-17%

$719.99

 with warranty
Starting at $45/mo with

Heads up

Your vehicle can use this product in multiple locations. Only a quantity of one can be selected from the product page. You will have the option to adjust the quantity within your cart.

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Dollar Icon
VIP Product Get $72.00 in rewards to spend later
Quantity
Available: Ships in 10-14 days
Brand new

Buy it now


Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Hassle-free immediate replacement within minutes!
  • Easy online claims 24/7
  • Covers product breakdowns and failures
Swoosh Icon Icon of Swoosh

For over 25 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts

Loading...
95-8155 main

Metra 95-8155 Dash Kit

Install a new Double-DIN car stereo in select 1997-2001 ES300 (Matte Black)

3
-45.47%

$17.99

List price $32.99

70-8112 main

Metra 70-8112 Wiring Harness

Install a new car stereo and retain factory amplifier in select 1991-2001 vehicles from Toyota, Lexus

14
-23.09%

$9.99

List price $12.99

99-8155 main

Metra 99-8155 Dash Kit

Install a new Single-DIN car stereo in select 1997-2001 ES300 (Matte Black)

3
-40.92%

$25.99

List price $43.99

DEH-S4220BT main

Pioneer DEH-S4220BT

Single DIN CD Receiver with Bluetooth and Amazon Alexa

9
-11.77%

$149.99

List price $170.00

XBAF525 main

NVX XBAF525

Universal 5.25" Waterproof Silicone Rubber Speaker Baffle Ring Kit (Pack of 2)

9
-15.01%

$16.99

List price $19.99

FRING525 main

NVX FRING525

Universal 5.25" Self-Adhesive Foam Speaker Baffle Ring Kit (Pack of 2)

2
-45.02%

$10.99

List price $19.99

Limited time!
Stage3 527 main

JBL Stage3 527 (STAGE3527AM)

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

2
-36.38%

$69.95

List price $109.95

R1T-S main

Rockford Fosgate PRIME R1T-S

160W Peak (80W RMS) 1" PRIME Series Mylar Balanced Dome Car Tweeters

34
Lowest price in 30 days
NSP525 main

NVX NSP525

240W Peak (160W RMS) 5.25" N-Series 2 Way Coaxial Car Speakers

27
-16.67%

$54.99

List price $65.99

XED1T main

Cerwin-Vega XED1T

1000W Peak (90W RMS) 1” XED Series 4-ohm Piezo Dome Tweeters

19
-16.67%

$29.99

List price $35.99

Current Promotions (1 offer)


Get a Free roll of Belva 16 Gauge Speaker Wire. Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.

Sundown Audio U-18 v.2 D4 18" (U18V2D4)

100% off


Priced separately $732 98

Promo Savings of $12 99

Total price:

$719 99

Description


Sundown Audio brand icon

Authorized dealer


Sundown Audio U-18 v.2 D4

Designed to be at home in the competition lanes or playing your favorite music, the U Series is the premier “standard suspension” woofer in the Sundown lineup. A double-stacked 9.4-inch wide ferrite magnet system is coupled to a thick top plate. A thick set of shorting rings are used inside the magnets and on the pole cap, smoothing out frequency response while doubling as a heat sink and airflow guide. A custom aluminum frame was designed specifically for the U Series. It’s substantially thicker and equipped with heat dissipation ribs at the bottom of the frame. The U v.2 motor also features an extended pole piece to keep the coil under perfect control under high stress. The coil temperature is controlled with machined, high-velocity pole channels and a series of 16 direct air-gap vents in the back plate.


Product Details:

  • 18" Dual 4 ohm U Series Subwoofer
  • Power Handling:
    • Peak: 4000 watts
    • RMS: 2000 watts
  • Pressed Paper Cone
  • Double-Stitched Surround
  • Optimized for small ported or bandpass enclosures
  • Heavy-duty cast basket for added durability
  • Spring-loaded terminals accept up to 8-gauge wire
  • Stitched-on heavy-duty tinsel leads for easy connection
  • Solid pole with vent channels and aluminum shorting ring cap
  • Rear gap-venting and top cooling channels
  • 3" High Temperature Copper Voice coil
  • Aluminum voice coil former for superior heat dissipation
  • 30 mm Xmax
  • Double Stacked Ferrite magnet motor structure
  • Resonance Frequency (Fs): 30.9212 Hz
  • Sensitivity: 88.87 dB
  • Recommended sealed box volume: 3.0 cubic feet
  • Recommended ported box volume: 4.0 cubic feet
  • Top-mount depth: 10"
  • Cutout diameter: 16.9"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Sundown Audio U-18 v.2 D4 18" (U18V2D4) Subwoofer

Mono Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 2 Sundown Audio U-18 v.2 D4 18" (U18V2D4) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp - Bridged

Wiring Guide to Wire 3 Sundown Audio U-18 v.2 D4 18" (U18V2D4) Subwoofers

Mono Amp

4 Channel Amp

Wiring Guide to Wire 4 Sundown Audio U-18 v.2 D4 18" (U18V2D4) Subwoofers

Mono Amp

2 Channel Amp

2 Channel Amp - Bridged

4 Channel Amp


Loading...
DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

3
-19.05%

$339.99

List price $420.00

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
Limited time!
DMH-W3050NEX main

Pioneer DMH-W3050NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)

1
-24.20%

$469.99

List price $620.00

Club 522F main

JBL Club 522F (SPKCB522FAM)

270W Peak (90W RMS) 5.25" Club Series 2 Way Coaxial 3-ohm Speakers

-42.29%

$74.99

List price $129.95

Reference 5030cx main

Infinity Reference 5030cx (REF5030CX)

390W Peak (130W RMS) 5.25" Reference Series 2-Way 3-ohm Component Speaker System

2
-60.01%

$99.95

List price $249.95

Limited time!
DMX709S main

Kenwood eXcelon DMX709S

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)

20
-33.50%

$399.00

List price $600.00

Limited time!
iLX-W670-M main

Alpine iLX-W670-M

6.75" Double DIN Touchscreen Digital Multimedia Receiver with iDataLink Maestro Support, Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)

2
-30.01%

$349.95

List price $500.00

Limited time!
XAV-AX8500 main

Sony XAV-AX8500

10.1" Single DIN Floating Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Wired Android Auto (SiriusXM Ready)

2
-20.20%

$798.00

List price $999.99

MVH-S322BT main

Pioneer MVH-S322BT

Single DIN Digital Media Receiver with Bluetooth and Amazon Alexa

7
-13.34%

$129.99

List price $150.00


Best selling similar products

49L7X181 small

Kicker L7X181 (49L7X181)

• RMS Power: 1000 - 2000 watts
• Impedance: Dual 1 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 13-3/16"

$949.99

List price $1049.99

49L7X182 small

Kicker L7X182 (49L7X182)

• RMS Power: 1000 - 2000 watts
• Impedance: Dual 2 ohm
• Double-pressed pulp Cone
• UV-resistant Santoprene Surround
• Mount depth: 13-3/16"

(1)

$949.99

List price $1049.99

VFLCOMP-1822 small

American Bass VFL Comp Signature 18" (VFLCOMP-1822)

• Peak Power: 10000 watts
• RMS Power: 5000 watts
• Impedance: Dual 2 ohm
• Kevlar Fiber-Enforced Non-Pressed Paper cone
• High Roll Foam surround
• Mount depth: 11"

$1002.36

List price $1618.44

VFLCOMP-1811 small

American Bass VFL Comp Signature 18" (VFLCOMP-1811)

• Peak Power: 10000 watts
• RMS Power: 5000 watts
• Impedance: Dual 1 ohm
• Kevlar Fiber-Enforced Non-Pressed Paper cone
• High Roll Foam surround
• Mount depth: 11"

$1002.36

List price $1618.44

ZV718D2 small

Sundown Audio Z-18 v.7 D2 18" (Z18V7D2)

• Peak Power: 7000 watts
• RMS Power: 3500 watts
• Impedance: Dual 2 ohm
• Treated Paper Cone
• Treated Foam Surround
• Sensitivity: 91.07 dB

$1399.99

List price $1679.99

SW-M18D1 small

Sundown Audio M-18 D1 18" (M18D1)

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 1 ohm
• Polypropylene Cone
• High Roll Foam Surround
• Mount depth: 14.05"
• Sensitivity: 85.83 dB

(3)

$699.99

List price $839.99

SW-XV318D1 small

Sundown Audio X-18 v.3 D1 18" (X12V3D1)

• Peak Power: 5000 watts
• RMS Power: 2500 watts
• Impedance: Dual 1 ohm
• Pressed Paper Cone
• Mega Roll V2 Surround
• Mount depth: 13.6"
• Sensitivity: 88.6 dB

$849.99

List price $1019.99

SW-XV318D2 small

Sundown Audio X-18 v.3 D2 18" (X12V3D2)

• Peak Power: 5000 watts
• RMS Power: 2500 watts
• Impedance: Dual 2 ohm
• Pressed Paper Cone
• Mega Roll V2 Surround
• Mount depth: 13.6"
• Sensitivity: 87.6 dB

$849.99

List price $1019.99

SW-SAV218D4 small

Sundown Audio SA-18 v.2 D4 18" (SA18V2D4)

• Peak Power: 2500 watts
• RMS Power: 1250 watts
• Impedance: Dual 4 ohm
• Competition Grade Paper cone
• Foam surround
• Mount depth: 10.125"
• Sensitivity: 90.7 dB

$499.99

List price $599.99

M18D2 small

Sundown Audio M-18 D2 18" (M18D2)

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Treated Paper Cone
• Mega Roll V2 Surround
• Mount depth: 14.05"
• Sensitivity: 86.10 dB

(1)

$699.99

List price $839.99

Specifications & Details


Subwoofer Specifications
Series
U Series
Subwoofer Size
18"
Peak Power Handling
4000 watts
RMS Power Handling
2000 watts
Voice Coil(s)
Dual
Impedance (Per Voice Coil)
4 ohm
Voice Coil Material
Copper
Voice Coil Diameter
3"
Sensitivity
88.87 dB
Xmax (millimeters)
30 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Pressed Paper
Woofer Surround
Double-Stitched
Magnet Structure
Double Stacked
Magnet Type
Ferrite
Subwoofer Grille
No
Re-Cone Kit Available
No
CTA-2031 Compliant
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Bandpass
Ported / Vented
Sealed
Optimum Sealed Box Volume
3.0 cubic feet
Optimum Ported Box Volume
4.0 cubic feet
Top-Mount Depth (Mounting Depth)
10"
Cutout Diameter
16.9"
Shallow Mount Installation
No
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
30.9212 Hz
Equivalent Compliance (Vas)
114.6901 liters
Total Speaker Q Value (Qts)
0.5872
Electrical Q Value (Qes)
0.6572
Electrical Resistance of Voice Coil (Re)
6.0767 ohm
Mechanical Q Value (Qms)
5.5116
What is in the box?
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

SW-UV218D4

Weight:

62.00lbs

Internal SKU:

uv218d4

Internal Product ID:

206545

Customer Ratings & Reviews


Sundown Audio U-18 v.2 D4 18

5 star
0%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found


165-CVX small

Focal 165 CVX Open Box

6-1/2" 2-way Car Speakers (165CVX)

$149.99

List price $399.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1998 Lexus ES300

2005 Acura TL

2002 Acura RSX

2008 Jeep Compass

2010 Ford Explorer

2019 Chevrolet Trax

2019 Toyota Avalon

2015 Honda Civic

2018 Toyota Sienna

1992 Audi 100 Quattro

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.