1990 Harley-Davidson Electra Glide Police FLHTP Parts & Accessories
Touring Motorcycle
Evolution (Evo) Era (1984-1998)
155 parts available
39 Performance
15 Maintenance
101 Accessories
1990 Harley-Davidson Electra Glide Police FLHTP
About the 1990 Harley-Davidson Electra Glide Police FLHTP
The 1990 FLHTP is the police-service variant of the Electra Glide, featuring the 80 cubic inch Evolution V-Twin engine. Built for heavy-duty fleet use, it is distinguished by its solo air-ride seat, specialized wiring for emergency equipment, and 'hockey puck' saddlebag latches. This model year represents a mature phase of the Evolution engine era, known for significantly improved reliability over the preceding Shovelhead models.
What Makes This Trim Special
- Solo Air-Ride Seat — A 'tractor-style' solo saddle supported by an air bladder and reservoir system for all-day comfort.
- Hockey Puck Saddlebag Latches — Top-mounted twist knobs (resembling hockey pucks) designed for easy one-handed operation while riding.
- Police Wiring Harness — Includes dedicated circuits and handlebar switches (red/blue buttons) for pursuit lights and sirens.
- Heavy-Duty Charging System — Higher output alternator to support emergency lighting and radio equipment.
- Oil Cooler — Factory-installed external oil cooler to manage heat during extended idling or low-speed patrol.
Likely but unverified:
- Calibrated Speedometer — Certified 'Certified Police' speedometer for accurate pace clocking.
Key Specifications
| Engine |
Evolution 45-degree V-Twin, OHV Bore x Stroke: 3.5 in x 4.25 in |
| Displacement | 1337cc (81.6 cu in) |
| Fuel System |
38mm Keihin Carburetor Standard Keihin CV carburetor on most 1990 units |
| Cooling | Air-cooled |
| Transmission | 5-speed manual |
| Drivetrain | Belt final drive |
| Front Suspension | 39mm Telescopic fork |
| Rear Suspension |
Dual air-adjustable shocks Police models often featured heavy-duty air lines |
| Front Brakes | Dual 292mm discs, 4-piston calipers |
| Rear Brakes | Single 292mm disc, 4-piston caliper |
| Front Tire | MT90B16 |
| Rear Tire | MT90B16 |
| Weight | 732 lbs (dry) |
| Seat Height | 30.7 in (unladen, varies with air seat pressure) |
| Fuel Capacity | 5.0 gal |
Ownership at a Glance
What to know about maintaining a 1990 Harley-Davidson Electra Glide Police FLHTP
Maintenance
- Oil Service
- Air Seat Pressure
Wear Items
- Cylinder Base Gaskets
- Swingarm Bushings (Cleveblocks)
Upgrades
- Stabilizer Kits
- CV Carburetor Tuning
Replacements
Known Issues 3
Top reported problems from owners and mechanics
High
Inner Cam Bearing Failure
The stock INA bearing with a plastic cage can disintegrate, sending metal debris through the engine.
Medium
High-Speed Wobble
Instability caused by the 'Cleveblock' rubber swingarm bushings and the rubber engine mounting system.
Low
Stator Plug Oil Leak
Oil can weep from the rubber plug where the stator wires exit the primary case.
Parts Most Owners Need
Performance Upgrades 39
Fits
Fits
Baker Drivetrain
Baker Drivetrain High Torque Bearing/Seal Kit
$40.95 - $139.95
2 of 2 options fit
In Stock
Fits
Fits
Fits
Fits
Drag Specialties
Drag Specialties Exhaust Port and Crossover Gaskets
$99.95
1 of 8 options fit
In Stock
Fits
Fits
Fits
Fits
Fits
WISECO PISTON
Dynojet Power Commander 6 Fuel Injection Module
$242.95 - $269.95
8 of 1810 options fit
In Stock
Fits
Maintenance Parts 15
Fits
Baker Drivetrain
Baker Drivetrain Replacement Bearings and Components for 5-Speed Big Twin
$25.95 - $44.95
2 of 6 options fit
In Stock
Fits
Fits
Fits
Drag Specialties
Drag Specialties 530 Chain Conversion Rear Sprockets
$93.95 - $111.95
6 of 17 options fit
In Stock
Fits
Fits
Fits
Drag Specialties
Drag Specialties High Performance 6" Dragtron II Air Cleaners
$138.95 - $145.95
2 of 2 options fit
In Stock
Fits
Drag Specialties
Drag Specialties Premium Washable Air Filter Elements
$46.95
1 of 23 options fit
In Stock
Fits
Fits
Drag Specialties
Drag Specialties Spoke Sets for Spun Steel and Excel Aluminum Rims
$136.95
3 of 7 options fit
In Stock
Fits
Fits
Accessories 101
12 of 101 shown
View All Controls & Cockpit →
Fits
Fits
Fits
Arlen Ness
Arlen Ness Method Driver and Passenger Floorboards
1 of 5 options fit
No longer available
Fits
Fits
Arlen Ness
Arlen Ness Speedliner Driver and Passenger Floorboards
$714.95 - $1,144.95
4 of 6 options fit
In Stock
Fits
Fits
Fits
Fits
Fits
Fits
Fits
Frequently Asked Questions About the 1990 Harley-Davidson Electra Glide Police FLHTP
No, the 1990 FLHTP uses a carburetor (typically a Keihin CV). Fuel injection was not introduced to the Electra Glide line until 1995.
The engine oil capacity is approximately 4.0 US quarts with a filter change.
There is an air valve located under the right-side saddlebag or rear rack. Use a hand pump to adjust pressure between 20 and 60 PSI based on rider weight.
The FLHTP includes a solo air-ride seat, 'hockey puck' saddlebag latches, a heavy-duty charging system, an oil cooler, and a specialized police wiring harness.
Standard FLHTP models did not come with a radio; the fairing usually contains a radio box or blanking plates for police equipment.
It typically uses a YTX24HL-BS or an equivalent high-capacity 12V battery.
This is often due to worn swingarm 'Cleveblock' bushings or engine mounts. Installing a stabilizer kit is a common solution.
Yes, but it requires removing the solo air-ride hardware and installing a civilian-style seat and passenger floorboards/pegs.
Looking for parts for a different ride?
Browse our full catalog of rides or use the vehicle selector to find parts that fit your machine.
Search
Current Ride
No ride selected
Recently viewed products
Your cart is empty