What vehicles does this auto part fit?

This STANDARD IGNITION auto part (Part #D-30) fits specific vehicle applications. Compatible vehicles include 1973-1978 Mazda RX-3, RX-4, Cosmo and more. Use the compatibility checker above to verify fitment for your exact vehicle including engine and trim options.

Is this part covered by warranty?

Yes, this STANDARD IGNITION auto part includes a 24-month limited warranty covering defects in materials and workmanship. AutoBuffy also offers 30-day hassle-free returns if the part doesn't fit your vehicle.

How fast is shipping?

AutoBuffy ships fast — orders before 3 PM ET ship the same day. Most arrive within 3-5 business days. Expedited shipping is available at checkout.

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We can’t guarantee fitment or accept fitment returns without a vehicle selected.

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Standard Ignition Alternator Diode (D-30)

Name: Standard Ignition Alternator Diode (D-30)
Brand: STANDARD IGNITION
SKU: D-30
Price: 71.95 USD
Availability: OutOfStock
Rating: 4.9 (12847 reviews)

Authorized Dealer

Standard Ignition Alternator Diode (D-30)

BrandStandard IgnitionLearn More

Qty/Vehicle1

ConditionNew

Includes: (1) Assembly, Hardware

UPC: 91769007720

Interchanges: 175724510, 20-5528, 20-5530View More

20% OFF$7195

$89.95Save $18.00•Fast Shipping

As low as $17.99/mo with PayPal

Estimated Delivery by calculating...

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Ships to

Product Specifications

Features & Benefits

•Direct OE fit - no modifications needed
•Meets or exceeds manufacturer specs
•24-month warranty included
•Fast Shipping — ships same day before 3 PM ET

BrandStandard Ignition

Part NumberD-30

ConditionNew

N12

Dimensions3.6" × 3.875" × 3.875"

Weight0.53 LB

Compatibility

Vehicle Compatibility

Guaranteed to fit 0 vehicles from Infinity--Infinity

No compatibility data available

Frequently Asked Questions

We're always here to help. If you can't find your answer, ask Rydon - our AI assistant will help you out.

Will this part fit my vehicle?

This part is designed for specific vehicle applications. Use the vehicle selector above to confirm it fits your exact year, make, and model before ordering.

Is this a direct fit OE replacement part?

Yes, this Standard Ignition part is engineered as a direct OE-quality replacement. It matches the original specifications, mounting points, and connector types for a straightforward installation.

What warranty does Standard Ignition provide?

Standard Motor Products backs this part with a comprehensive warranty. As one of the largest independent manufacturers of automotive replacement parts, Standard Ignition products are built to OE specifications.

Compatibility

Vehicle Compatibility

Guaranteed to fit 0 vehicles from Infinity--Infinity

No compatibility data available

Product Specifications

Brand

STANDARD IGNITION

Weight

0.53 LB

Part Number

D-30

Dimensions

3.6" x 3.88" x 3.88"

UPC/GTIN

91769007720

N12

Check if this fitsShop worry-free by verifying fitment first. If the part doesn't fit, we'll make it right or refund you. Learn more

Main Image

Click to expand

Standard Ignition Alternator Diode (D-30)

Authorized Dealer

$7195

$89.95SAVE 20%

Dealer charges $130.43— save $58.48

Pay $17.99/mo with

Learn More

Fast delivery Mon, Jun 22

Ships To —Edit

Out of Stock

OE REPLACEMENT

Standard Ignition Alternator Diode (D-30)

Part #:D-30

$71^.95In Stock

$89.95Save 20%

Pay in 4 interest-free payments of$17.99withPayPal

Quantity:

Out of Stock

Fast delivery between Mon, Jun 22 to Mon, Jun 22

Ships To:

Out of Stock

Key Features

OEM-Equivalent QualityMeets/exceeds factory specs

American BusinessMaryland since 1986

24-Month WarrantyLimited coverage on every part

Fast Same Day ShippingWe ship all orders the same business day before cutoff

Product Specs

BrandSTANDARD IGNITION

Part NumberD-30

ConditionNew

N12

Dimensions3.6" x 3.875" x 3.875"

Weight0.53 LB

UPC/GTIN91769007720

Compatibility

Vehicle Compatibility

Guaranteed to fit 0 vehicles from Infinity--Infinity

No compatibility data available

Interchanges

Part numbers from other manufacturers that are compatible

OEM175724510

OEM20-5528

OEM20-5530

OEM2D3048

OEM2D3050

Questions & Answers

Have a Question?

Ask Marvin, our Car Expert

Offline

Or leave a voicemail at 888-477-2530

Things to Know

WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which are known to the State of California to cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts

Check if this fits your car first

Standard Ignition Alternator Diode (D-30)

Standard Ignition Alternator Diode (D-30)

Product Specifications

Compatibility

Vehicle Compatibility

Frequently Asked Questions

Compatibility

Vehicle Compatibility

Product Specifications

Interchanges

Standard Ignition Alternator Diode (D-30)

Standard Ignition Alternator Diode (D-30)

Key Features

Product Specs

Compatibility

Vehicle Compatibility

Interchanges

Questions & Answers

Things to Know

24 Month Warranty

30 Day Returns

Fast Same Day Shipping

About This

Key Features

Signs This Part Needs Replacement

STANDARD IGNITION

Installation Guide

Tools Needed

Frequently Asked Questions