Garage
Shop

See all parts that fit your 2008 Explorer

Infinity Reference Series Rear Factory Speaker Replacement Package

Fits select 2002-2008 Ram 2500 / 3500 / 1500

Infinity
Shop all Infinity
highlight-star-icon

• 135 watts Peak Each, 45 watts RMS Each
•Textile Edge-driven tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

See compatible vehicles Learn more about the 02-08-dodge-ramtrk15-rd-inf
No Fit Icon

Doesn't fit your 2008 Explorer

Similar items | Update vehicle | Vehicle store
List price $152.94
Thanks , You Pay:
-23%

$117.94

 with warranty
Starting at $11/mo or 4 payments of $30 Buy now, pay later and installment payment plans are offered by Afterpay and Affirm. Learn more

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.

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
Quantity
In Stock
Brand new

Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

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
NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
CR-6 main

American International CR-6

Connect Factory Antenna to New Aftermarket Radio in select 2002-2020 vehicles from Ford, Chevrolet, GMC

39
-73.38%

$3.99

List price $14.99

70-5520 main

Metra 70-5520 Wiring Harness

Install a new car stereo in select 2003-2016 vehicles from Ford, Mercury, Lincoln

56
FMK540 main

American International FMK540

Single DIN or Double DIN Stereo Dash Kit for select 2004-2016 vehicles from Ford, Lincoln, Mercury

14
-71.82%

$10.99

List price $39.00

99-5812 main

Metra 99-5812 Dash Kit

Install a new Single-DIN car stereo in select 2004-2016 vehicles from Ford, Lincoln, Mercury

6
-46.68%

$15.99

List price $29.99

SHFD03B main

Scosche SHFD03B

Speaker Harness for select 1998-2019 vehicles from Ford, Mazda, Lincoln

8
-18.50%

$8.99

List price $11.03

MET-FD4 main

Metra MET-FD4

Install a New Car Stereo and Retain Steering Wheel Controls and Other Factory Features in select 2005-2014 vehicles from Ford, Lincoln, Mercury

1
-10.00%

$89.99

List price $99.99

DPX305MBT main

Kenwood DPX305MBT

Double DIN Digital Media Receiver with Bluetooth and Built-in Alexa (SiriusXM Ready)

15
-20.50%

$159.00

List price $200.00

Limited time!
CAR1013 main

Jensen CAR1013

10.1" Single DIN Floating Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto

5
-11.43%

$309.99

List price $349.99

VSP68 main

NVX VSP68

600W Peak (200W RMS) 6x8" V-Series 2 Way Coaxial Car Speakers

46
-16.67%

$99.99

List price $119.99

FRING68 main

NVX FRING68

Universal 6x8" or 5x7" Self-Adhesive Foam Speaker Baffle Ring Kit (Pack of 2)

12
-46.68%

$15.99

List price $29.99

Description


Infinity brand icon

Authorized dealer

Infinity REF507F (INFSPKRF507FUS)

270W Peak (90W RMS) 5.25" Reference Series 2-Way Coaxial 3-ohm Speakers
Quantity: 1

Product Details:

  • 5-1/4" Reference Series 2-way Coaxial Car Speakers
  • Power Handling:
    • Peak: 270 watts per pair / 135 watts each
    • RMS: 90 watts per pair / 45 watts each
  • Polypropylene cone material
  • Rubber speaker surround
  • Textile Edge Driven Dome Tweeters
  • +3dB tweeter boost switch function
  • 3-ohm impedance combines with speaker wire for 4-ohm load
  • Features Plus One woofer cone architecture
  • Increased low-frequency output and accurate sound production
  • Optimized frame size featuring compact design
  • Top-mount Depth: 1-15/16"
  • Cutout Dimensions: 4-1/2"
  • Impedance: 3 ohm
  • Frequency Response: 67 - 21000 Hz
  • Sensitivity: 92 dB
  • Authorized Internet Dealer
  • MFR #: REF507F
  • 1-year Manufacturer's Warranty

  • Priced Per Pair

NVX NSH-6514

Install New Speakers in select 1997-2024 vehicles from Dodge, Ram, Jeep
Quantity: 1

Product Features:

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

The vehicle you have selected 2008 Ford Explorer is not compatible. Change vehicle or See list of compatible similar products


Loading...
REF507CF_2_MET-825601_2 main

2 Infinity REF507CF (INFSPKRF507CFUS) w/ Adapter Plates

390W Peak (130W RMS) 5.25" Reference Series 2-way 3-ohm Component Speaker System with Speaker Adapter Plates

3
-12.14%

$477.88

List price $543.88

Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

124
-33.36%

$79.96

List price $119.99

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

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

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

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

XED62 main

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

15
-16.67%

$49.99

List price $59.99


Best selling similar products

06-10-ford-explorer-fdspkg small

NVX Front N-Series Speaker Upgrade Kit for 2006-2010 Ford Explorer

• Front Door NVX 5x7"/ 6x8" Coaxial Speakers
• Metra Speaker Harnesses
• Plug-n-play Installation

(59)

$87.98

List price $108.98

06-10-ford-explorer-spkg small

NVX Complete N-Series Speaker Upgrade Kit for 2006-2010 Ford Explorer

  • NVX NSP68 N-Series 6x8" 2-Way Coaxial Car Speakers
  • 540W Peak (180W RMS) power handling per pair
  • Metra 72-5600 wiring harness adapters included
  • Designed for straightforward speaker installation
  • Complete factory upgrade speaker bundle kit

(59)

$138.80

List price $217.96

06-10-ford-explorer-rdspkg small

NVX Rear N-Series Speaker Upgrade Kit for 2006-2010 Ford Explorer

• Rear Door NVX 6x8" Coaxial Speakers
• Metra Speaker Harnesses
• Plug-n-play Installation

(59)

$87.98

List price $108.98

06-10-ford-explorer-rspspkg small

NVX Rear N-Series Speaker Upgrade Kit for 2006-2010 Ford Explorer

• NVX 6x8" Coaxial Speakers
• Metra Speaker Harnesses
• Plug-n-play Installation

(59)

$75.99

List price $108.98

MBTAC-STG6-OEM-1 small

MB Quart MBTAC-STG6-OEM-1

• System includes 8x10" front speakers, 7" rear speakers, 5-channel amplifier
• Direct fit for select 2016-2023 Tacoma
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware
• Includes PAC module for integrating into the OEM JBL source unit used in 2020-2023
• Requires the OEM JBL source unit model years 2020-2023

(1)

$1487.49

List price $1799.99

20GLADR-STG5 small

Rockford Fosgate Stage 5 20GLADR-STG5

• Includes four 6.5" loaded speaker enclosures, one pair of tweeters two loaded subwoofer enclosures, two marine amplifiers, one digital signal processor, and vehicle-specific harnesses and hardware
• Direct fit for a hassle-free installation, fitting perfectly into select 2020-2023 Gladiator for seamless integration
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

$4499.99

List price $4499.99

PSS-TSLA-M3P small

Alpine PSS-TSLA-M3P

• Includes 6.5" and 4" speakers, 10" loaded sealed enclosure, and 12-channel DSP
• Direct fit for select 2017-2025 Model 3 with Premium Audio System
• High resolution (Hi-Res) audio certified
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Requires vehicle-specific harness for installation (sold separately)

$2429.96

List price $3240.00

PSS-22WRA small

Alpine PSS-22WRA

• Includes two 6.5" convertible speakers, one loaded 10" subwoofer enclosure, 2 amplifiers, one remote bass knob, and vehicle-specific harnesses and brackets
• Compatible with select 2011-2018 Wrangler Unlimited and Wrangler Unlimited (JK)
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

(2)

$2299.95

List price $2880.00

BB4000-Four-Door small

JBL BB4000 Soundbar for 4-Door 2021-up Ford Bronco (VM2DZ-18808-K)

• Overhead Soundbar speaker for select 2021-2026 Ford Bronco four-door vehicles
• Peak Power: 100 watts per channel
• Two 4" long excursion woofers
• 2" high-output tweeter per channel
• IPX6 waterproof and splashproof rating
• Mounting clamps, inserts and quick release brackets included

$199.99

List price $499.99

KFC-XP6902C small

Kenwood eXcelon KFC-XP6902C

• 300 watts Peak Each, 100 watts RMS Each
• 6x9" Woofer and 2.75" Midrange
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 84 dB
• Custom fit for select 2002-2024 vehicles from Toyota, Dodge, Chevrolet

(5)

$209.00

List price $320.00

Specifications & Details


General specifications
Series
Reference Series
Total PEAK Per Pair/Set
270 watts
Total RMS Per Pair/Set
90 watts
Front speaker specifications
Speaker Size
5-1/4"
Design
2-way Coaxial
Tweeter Design
Edge-driven
Tweeter Composition
Textile
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Sensitivity
92 dB
Frequency Response
67 - 21000 Hz
Impedance (Per Voice Coil)
3 ohm
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

02-08-DODGE-RAMTRK15-RD-INF

Weight:

3.36lbs

Internal SKU:

02-08-dodge-ramtrk15-rd-inf

Internal Product ID:

207820

Customer Ratings & Reviews


Infinity Reference Series Rear Factory Speaker Replacement Package thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
4

Customer Reviews

Sort by:

Loading...

Sound Great

The following review is for REF507F, which is a part of the bundle you are viewing.

Still have stock radio, and they sound great. Installation was a bit rough, they did not line up with factory srew holes.

By Mark on May 4, 2025 Checkmark Icon Verified purchase

2 found this helpful



CAP30S small

Absolute CAP30S Silver

1.8 Farad Digital Capacitor

$54.99

List price $139.99

BEC106 small

Eclipse BEC106

Rearview Backup Camera (BEC-106)

$199.99

List price $259.99

CAP38S small

Absolute CAP38S (SILVER)

2.5 Farad Digital Power Capacitor

$64.99

List price $119.99

SWI-ECL2 small

PAC SWI-ECL2

Interface for Eclipse to Factory Steering Wheel Audio Controls

(1)

$49.99

List price $85.95

JBASS small

DS18 JBASS

Empty Dual 10" Sealed Tailgate Enclosure for select 1997-2022 vehicles from Jeep

$467.95

List price $467.95

CHOPPER2 Azul small

Aerial7 CHOPPER2 - Azul

Over-Ear CHOPPER Series Multi-Device Stereo (Aerial 7) Headphones with In-Line Microphone

$9.99

List price $70.00

ASY-DOCKANM-01 small

AutoNet Mobile ASY-DOCKANM-01

Additional/Replacement Docking Station for the AutoNet Mobile KT-ANMRTR-04

$59.00

List price $59.00

XK01 small

XpressKit XK01

Xpress Kit Interfaces with the factory door lock and alarm controls on GM, Chrysler, Dodge or Jeep vehicles equipped with transponder anti-theft systems (DEI Install Bypass Essentials XK01)

$69.99

List price $89.99

AP4-FD21 small

PAC AP4-FD21

Amplifier Integration Interface for select 2011-2025 vehicles from Ford with Premium Sony Audio Systems

(6)

$419.00

List price $499.00

Related Searches


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

2008 Ford Explorer

2015 MINI Cooper

2017 Ford Flex

2014 Hyundai Equus

1978 Audi 5000

2011 Volkswagen Eos

2000 Lexus RX300

1980 Ford LTD

2003 Mazda B3000

2007 Dodge Sprinter 2500

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.