FEP Connector
Sealed FEP connector housings for Volkswagen, Audi and other vehicle platforms, built into wire harnesses that fit the first time. Send your part numbers or a sample, and QL-Custom will build the harness to your drawing.
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FEP Connector Brand
FEP stands for Fahrzeugelektrik Pirna, a German maker of automotive connectors. The company was founded in 1949 in Pirna, near Dresden. It designs and builds plastic electrical connectors for vehicle wiring, along with switching and sensing parts. FEP runs sites in Germany, China and Mexico, and it is now part of the Amphenol Group. Many FEP housings carry Volkswagen part numbers, such as 1J0 973 723, because they are fitted across Volkswagen and Audi platforms. The range includes sealed and unsealed housings, shielded and unshielded versions, and housings for different current and voltage ranges. QL-Custom Technology Ltd. builds wire harnesses, pigtails and repair leads around the FEP connector range. Send us an FEP or VW part number, a drawing or a sample, and our engineers will match the housing, terminals and seals.
Snel een offerte aanvragenFEP Connector Portfolio
42121700
42121400
42121000
42122800
42123200
42121600
42122000
42123000
42512300
42032800
42127000
07P973702
1-1703543-0
1719105-1
1J0973704
1J0973723
1J0973724A
42035000
42038100
42062500
42064400
42064500
42064600
42064800
42068400
42068700
42068800
42072100
42121500
42121800
42122100
42122200
42122300
42122400
42122500
42123300
42123400
42123600
42123800
42125300
42125400
42161200
42515900
42615900
42811300
4B0973712
4D0971992
4H0973713
4H0973713B
4H0973714
6X0973722
Core Advantages of FEP Connector
Full Weather Resistance & Long Lifespan
Engine bays and wheel arches are hard places for wiring. Sealed FEP housings use wire seals and an interface seal to keep water, dust and road salt away from the contacts. Many also add a secondary lock that holds each terminal firmly under vibration. In our harnesses, we match every seal to the wire size, plug each empty cavity and add strain relief where the wires leave the housing. The connection stays dry and tight for years of service.
Stable Performance & Certified Safety
A harness is only as reliable as its crimps. We crimp on automatic machines, check crimp height and test pull force on every setup. Each finished harness then goes through a 100% electrical test for continuity, shorts and wrong pin positions. QL-Custom works to an ISO 9001:2015 quality system, and every batch carries a record of its materials and test results.
Exquisite Craft & Eco-friendly Versatility
FEP housings are keyed and color-coded, so each plug only mates with the right part. That speeds up assembly and cuts service mistakes. The same housing family appears on sensors, lights, actuators and switches, so one connector system can serve many of your harnesses and reduce the parts you stock. We build with RoHS- and REACH-compliant materials.
FEP Connector Production and Process
Good harnesses start with a clear plan. We keep each step simple, checked and recorded, from the first wire cut to the final pack. What you approve on the drawing is exactly what arrives at your door.
High-Quality Materials & Precision Molding
We start with automotive-grade wire from known suppliers, such as FLRY, TXL and GXL, sized to your current and routing needs. Housings, terminals and seals are checked against your BOM before they reach the line. When a branch needs extra protection, we can add overmolded strain relief in our own molding shop. Molding settings come from tested values, so every part comes out the same.
Rigorous Full-Item Inspection for Reliable Quality
We check every harness, not just a few from each batch. Crimp height, pull force and cross-section samples confirm each terminal. Operators make sure every terminal clicks into place and every secondary lock is closed. A test bench then checks each circuit for continuity, shorts and wrong pin positions. Each batch gets a lot number, so any part can be traced back to its materials.
Flexible Customization for Personalized Solutions
Your project is not like anyone else's, so your harness should not be either. Send us a drawing, a sample or a list of FEP or VW part numbers. We can change wire lengths, colors, gauges, labels, sleeving and connector ends. Pigtails, repair leads and adapter harnesses are all welcome. Small sample runs come first, so you can check the fit before you place a larger order.
FEP Connector Wiring Harness Solutions
Aerospace, Military & Automotive Electronics
Vehicles shake hard, run hot and face fuel and oil. FEP housings were designed for this world, and they are fitted across Volkswagen and Audi platforms. We build engine, sensor, lighting and repair harnesses around them, matched to your pin map and lengths. For aerospace and military projects, we build to your specification and use the connector family your standard calls for. Our engineers will tell you when an FEP connector is the right choice and when another series fits better.
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Precision Equipment, Semiconductor & Photovoltaic
Test rigs, production tools and solar systems need wiring that stays stable for years. Sealed FEP connectors keep moisture and dust away from the contacts, which helps outdoor and wash-down equipment. We build harnesses for test benches, sensors and auxiliary circuits, with clean routing and clear labels. Shielding and twisted pairs can be added wherever signal quality matters.
Snel een offerte aanvragenIndustrial Automation & Petrochemical Extreme Condition
Factory machines run long shifts, and site equipment faces heat, oil and constant vibration. Our harnesses use oil-resistant wire, abrasion sleeves and sealed connectors wherever the job needs them. Every branch is routed and labeled to your drawing, so installation and service go faster. Tell us the temperature, fluids and movement the harness will face, and we will choose the wire and protection to match.
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Industrieën en toepassingen
Chemical Processing
Pumps, valves and dosing skids often sit near splashes and washdown. Sealed FEP connector housings keep moisture and dirt away from the contacts on sensor and actuator lines. We add chemical-resistant sleeving where the harness runs near harsh fluids. Tell us what fluids are nearby, and we will choose the right wire jacket.
Semiconductor and Electronics
Test benches, handling tools and inspection rigs need clean, stable wiring. Keyed FEP housings stop wrong mating during setup and service. We build neat, labeled harnesses that are easy to route inside tight tool frames.
Medical and Life Science
Lab carts, mobile devices and test equipment need compact, reliable leads. We build small harnesses with sealed or unsealed housings and clear labels. Every unit is fully tested before it ships, and batch records help your team with its paperwork.
Food and Beverage
Filling and packing machines are washed down often. Sealed connectors and oil-resistant wire help harnesses survive frequent cleaning cycles. Smooth sleeving is easier to wipe clean than open wire bundles.
Aerospace and Automotive
FEP housings are fitted across Volkswagen and Audi platforms for sensors, lights and switches. We build engine, body and repair harnesses around them. For aerospace ground equipment and test rigs, we build to your specification and choose the connector family it calls for.
Energy, Solar, and Oil and Gas
Sun, salt and sand wear down exposed wiring. Sealed housings, UV-resistant sleeving and strong strain relief help our harnesses last at remote sites. A longer service life means fewer trips for repair crews.
Sealing Design for Dry, Reliable Connections
Seals Matched to Wire
We measure the wire insulation before we fit a seal. A seal that is too loose lets water in, and one that is too tight can tear. Each seal sits snugly, so the housing keeps its rating.
Every Empty Cavity Plugged
Unused cavities get a sealing plug. An open hole is the fastest way to flood a sealed connector. We check every housing before it moves to the next step.
Locks Fully Closed
Each terminal must click home, and each secondary lock must close fully. A half-seated terminal can work loose under vibration. Our operators check both on every plug.
Clean Handling, Clean Pack
Finished harnesses are coiled with care, never bent sharply at the seal. Each order goes into clean, labeled bags. You can open the bag and install the harness on the same day.
Built for Heat, Vibration and Washdown
- Heat-ready wire: High-temperature wire is available for hot zones near the engine and exhaust.
- Vibration-proof: Secondary locks and strain relief keep terminals in place on rough roads and running machines.
- Washdown-safe: Sealed housings keep water and cleaning fluids away from the contacts.
- Abrasion protection: Braided sleeving and corrugated tube guard the wires where they rub against metal.
- Service-friendly: Keyed housings and clear labels make repairs quick and safe.
- Ready to ship clean: We pack harnesses in sealed, labeled bags.
Custom Harness Configurations and OEM Integration
- Connector ends: FEP housings on one or both ends, or mixed with other connector series on the same harness.
- Size range: From short pigtails to long multi-branch looms, in metric (mm²) or AWG wire sizes.
- Branch layouts: Splits, splices and Y-leads, routed to your drawing or form board.
- OEM branding: Add your part numbers, labels or private packaging.
- Drawing to part: Send CAD files, a sample or part numbers. We check fit and cost, then share a quote and a sample plan.
- Fit guides: Ask for a simple pinout and installation sheet, so your team can install with ease.
- Steady supply: Plan your batches, and we will hold safety stock so your line never has to wait.
Beoordelingen van klanten
★★★★★
We moved our sensor leads to their FEP harnesses last spring. Not one failure since, and the install was simple.
Daniel Whitmore★★★★★
They matched our VW part numbers to the right housings within a day. The samples fit on the first try.
Kumi Imura★★★★★
They turned my rough sketch into a working adapter harness. The team answered every question in plain words.
Elena Rossi★★★★★
We run test rigs all day. The harnesses stayed clean and steady through months of hard use.
Hiroshi Tanaka★★★★★
Our repair leads go into vehicles every week. The seals hold, and the labels make each job faster.
Sarah Mitchell★★★★★
Their pinout sheet helped our new technicians get up to speed faster. Fit and finish are the best we have bought.
Katarzyna NowakPurchase Exact and Reliable FEP Connector
Why pick QL-Custom Technology Ltd.? We treat every FEP connector harness like an engineering project. We know the housings, terminals, seals and tests, so we can guide you from the first sketch to the final part. Our team speaks plain language and answers fast. We share test data and keep clear records, so you always know what you are getting. Whether you need one sample or a long production run, the quality stays the same. As a custom wire harness, cable assembly and overmolding manufacturer, we handle design, building and testing under one roof. Send us your drawing or part numbers today, and get a clear, honest quote.
Snel een offerte aanvragenFrequently Asked Questions
What is an FEP connector?
An FEP connector is a plastic electrical connector made by FEP Fahrzeugelektrik Pirna, a German automotive supplier founded in 1949. FEP housings are used in vehicle wiring for sensors, lights, switches and actuators. Many of them are known by their Volkswagen part numbers.
Are FEP connectors the same as VW or Audi connectors?
Many FEP housings are sold under Volkswagen part numbers, such as 1J0 973 723, and are fitted on Volkswagen and Audi platforms. FEP also has its own order numbers, such as 42121300. Send us either number, and we will match the part.
Can you build a harness from an FEP or VW part number?
Yes. Send the part number, wire lengths and pinout. If you only have a sample or a photo, our engineers can identify the housing and terminals, then draw the harness for your approval before we build it.
Are FEP connectors waterproof?
Many FEP housings are sealed, with wire seals and an interface seal. Others are unsealed and suit dry areas inside the vehicle. A sealed housing only keeps water out when each seal matches the wire size and every empty cavity is plugged, so we check both on every harness.
What wire do you use in FEP connector harnesses?
We use automotive wire such as FLRY, TXL and GXL, in the gauge your circuit needs. High-temperature wire is available for hot zones near the engine. Wire colors and printed IDs follow your drawing.
Can I order small quantities?
Yes. Prototype runs, repair leads and small batches are all welcome. Sample harnesses come first, so you can test the fit before you place a larger order.
How do I get a quote?
Use the form on this page. Send your part numbers, a drawing or a sample, plus quantities and wire lengths. We reply with a clear quote and lead time.