The Porsche 928 928 S4 is one of 7 trims in the Porsche 928 range. This page lists the 15 equipment codes available on it for the United States market, grouped into 7 categories. Equipment fitted as standard on this trim is marked “Standard”; “No charge” marks no-cost options and “—” marks an option whose period price has not yet been sourced.
Body Style
928 S4
Standard Equipment
Fitted as standard on the 928 S4, at no charge. Configurable options are listed in the sections below.
Code
Equipment
Category
—
5.0-liter (4957 cc) 32-valve V8, 316 hp
Performance & Sound
—
5-speed manual or 4-speed automatic (MY1987-1989); 4-speed automatic only (MY1990-1991)
Transmission
—
Rear-wheel drive, rear transaxle
Transmission
—
16 x 7 front and 16 x 8 rear wheels, 225/50 VR16 and 245/45 VR16 tires
Wheels
Transmission
Code
Option
Price (USD)
Ref
481
5-speed manual transaxle
—
249
4-speed automatic transmission
—
Performance & Sound
Code
Option
Price (USD)
Ref
221
Porsche variable-locking differential (PSD)
—
Chassis & Brakes
Code
Option
Price (USD)
Ref
482
Tire pressure monitoring system
—
Exterior Design
Code
Option
Price (USD)
Ref
650
Electric sunroof with wind deflector
$1,210
418
Protective side moldings
$195–$229
—
Rear model designation
No charge
—
Side model designation
No charge
Seats
Code
Option
Price (USD)
Ref
139
Heated front seats
$138–$289
—
Supple (soft) leather seats
$505–$561
340
Heated front passenger seat
$138–$289
Comfort & Assistance
Code
Option
Price (USD)
Ref
—
On-board computer
—
562
Driver and passenger airbags
—
—
Increased-capacity air conditioning
$792
Infotainment & Audio
Code
Option
Price (USD)
Ref
—
Blaupunkt Reno cassette radio
No charge
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Sources
Compiled from period Porsche brochures, Porsche press releases and technical specifications, Porsche’s approved-wheel bulletins, US-market paint and specification listings, EPA fuel-economy data and, for model years no Porsche document covers, published reference works. Figures are provisional historical data provided without warranty.
For software and AI agents: this page as Markdown, this generation as JSON, and llms.txt for the whole dataset.