ISO 9001:2015 Certified Factory  ·  Est. 2011

Silicon Nitride Glow Plugs for Diesel Parking Heaters Hot-pressed Si₃N₄ ceramic ignition pins — 3–5 seconds to 1,000°C, reliable at −40°C. Direct fit for Webasto, Eberspächer, Autoterm & universal diesel heaters.

We are a professional manufacturer of hot-pressed silicon nitride ceramic products. Our glow plugs, liquid-heating elements and dry-heating elements serve parking heaters, diesel engines, water heaters and industrial ignition systems worldwide.

Get Wholesale Price List Find Your OE Match
Factory-direct pricing · No middlemen · OEM & private label
3–5 sPre-Heat to 1,000°C
−40°C❄ Arctic Cold Start
5000 hService Life
10⁵×On-Off Cycles
ISO 9001:2015 Certified Hot-Pressed Si₃N₄ OE Cross-Reference Available
🔴 Unedited Bench Test · 3–5s Instant Ignition
Pre-Heat Time3–5 seconds
Max. Dry Temp.1,200°C
Service Life5,000 hours
Scroll
Eberspächer Airtronic D2 / D4 / D4S ◆ Webasto Air Top 2000 / 2000 ST ◆ Webasto Thermo 90 / 90 ST ◆ Webasto 3500 / 5000 ◆ Hydronic D4WSC / D5WSC ◆ Flame Detectors ◆ 8V · 12V · 18V · 24V ◆ OEM & Aftermarket ◆
Proof, Not Promises

Watch Our Glow Plugs Ignite — On the Bench, in the Heater

Unedited footage from our test benches: a silicon nitride pin glowing cherry-red within seconds, and live ignition inside a standard diesel parking heater head.

Real Test Installed in a parking heater combustion chamber
Real Test Close-up: pin reaches 1,000°C+ and ignites fuel vapour
See It Burn

From Cold Pin to Open Flame in Seconds.

Our glow plugs use a tungsten heating source embedded in a hot-pressed silicon nitride body. Energize it — the pin climbs past 1,000°C in 3–5 seconds, vaporizes the diesel mist and ignites the mixture. Exactly what happens inside your customers' heaters, every cold morning.

  • Real heater heads on our test benches — not studio renders
  • Current & temperature curves recorded for every design
  • The same pins we ship — no prototype bait-and-switch
3–5 s to 1,000°C −40°C cold start 8V / 12V / 18V
Extreme Cold Verified

Reliable Ignition at −40°C

Siberian winters kill metal glow plugs. Our silicon nitride pins keep their 3–5 second pre-heat and fire reliably at −40°C — because the ceramic body never turns brittle in the cold.

  • Pre-heat stays 3–5 s even after an overnight deep-freeze — no more long cranking cycles
  • Si₃N₄ body survives repeated freeze-thaw thermal shock without cracking
  • Metal plugs lose reliability below −5°C; ceramic pins still fire at −40°C
Full cold-chamber test footage available on request
Silicon nitride pin glowing red-hot in freezing test
−40°C
3–5 s pre-heat −40°C certified start Freeze-thaw proof
Engineered Upgrade

Why Buyers Are Switching from Metal to Silicon Nitride

Metal sheathed plugs overheat, corrode and crack. Our hot-pressed silicon nitride pins — developed from national key R&D programs for ceramic glow plugs — erase every one of those failure modes.

Silicon Nitride Ceramic Pin

Our core product — hot-pressed Si₃N₄ with embedded tungsten heater.

Pre-heat temperature1,000–1,200°C
Pre-heat time to 1,000°C3–5 s
On-off cycle endurance10⁵ times
Rated service life5,000 h
Low-temperature startReliable at −40°C
Corrosion resistanceAcid & alkali resistant
High-temperature strength≥900 MPa flexural
Electrical insulation≥1,500 V AC / 100 MΩ — leakage-free
Diameter precision±0.05 mm — seamless OEM drop-in
Resistance drift<1% over 5,000 h

Conventional Metal Sheathed Plug

The legacy standard your customers are upgrading from.

Pre-heat temperature800–900°C
Pre-heat time20–40 s
On-off cycle endurance≈2,000–3,000 cycles
Rated service lifeShort, progressive decay
Low-temperature startBelow −5°C unreliable
Corrosion resistanceOxidizes over time
High-temperature strengthSwells & cracks
Electrical insulationCasing breakdown over time
Diameter precisionThermal expansion distorts sleeve
Resistance driftHigh drift — slow starts
What this means for your business: dramatically fewer warranty claims, faster cabin heat-up your end customers notice immediately, and a premium line your metal-plug competitors cannot match on the spec sheet.
Product Range

Hot-Pressed Silicon Nitride, Three Product Families

Genuine photos from our catalogue. Parking-heater glow plugs are the flagship line — liquid and dry heating elements share the same ceramic core technology.

RZ glow plug family — real factory photo
The RZ family — every pin hot-pressed Si₃N₄, 100% end-of-line tested before packing
RZ08-45 silicon nitride glow plug

RZ08-45 · Glow Plug

Replaces Eberspächer 252069011300 · Airtronic D2 / D4 / D4S 12V
Voltage8V
Current8–9 A
Power64–72 W
Pin ø4.5 mm

Heater pin with connector harness. Pre-heats to 1,000°C in 3–5 s; starts reliably at −40°C.

Request datasheet →
RZ18-45 silicon nitride glow plug

RZ18-45 · Glow Plug

Replaces Eberspächer 252070011100 · Airtronic D2 / D4 / D4S 24V
Voltage18V
Current4.8–5.5 A
Power88–98 W
Pin ø4.5 mm

24 V-system heater pin, custom harness lengths and connectors on request.

Request datasheet →
RZ08-45-1 glow plug for Hydronic

RZ08-45-1 · Glow Plug

Replaces Eberspächer 252106011000 · Hydronic D4WSC / D5WSC 12V
Voltage8V
Current8–9 A
Power64–72 W
Weight25 g

Liquid-heater variant with crimp terminal harness for Hydronic platforms.

Request datasheet →
RZ08-42 glow plug for Webasto Air Top

RZ08-42 · Glow Plug

Replaces Webasto 84906B · Air Top 2000 12V
Voltage8V
Current5.2–6.9 A
Power42–55 W
Pin ø4.2 mm

Compact pin for Air Top series; also fits Webasto 3500/5000 heaters (12V).

Request datasheet →
RZ08-42-1 glow plug for Webasto 2000 ST

RZ08-42-1 · Glow Plug

Replaces Webasto 9005086A / 91370B · Air Top 2000 ST / 3500-5000 12V
Voltage8V
Current5.2–6.9 A
Power42–55 W
Pin ø4.2 mm

Sealed terminal version for 2000 ST and larger 12V heater units.

Request datasheet →
RZ12-42 glow plug 12V

RZ12-42 · Glow Plug

12V parking heaters · DPF / UAV ignition
Voltage12V
Current8–9 A
Power96–108 W
Pin ø4.2 mm

High-wattage 12 V pin; also suited to DPF after-treatment and drone ignition.

Request datasheet →
RZ18-42 series glow plugs 24V

RZ18-42 Series · 24 V Glow Plugs

Replaces Webasto 82307B / 9005087A / 9005931B / 82410B / 91371B
Voltage18V
Power54–72 W
Models6 harness variants
PlatformsAir Top · Thermo 90

Full 24 V family for Air Top 2000/2000 ST and Thermo 90/90 ST, incl. −1/−2/−3/−4 harness versions.

RZ18-30 flame detector series

RZ18-30 Series · Flame Detectors

Replaces Webasto 82306B / 82407B / 9010617A
Voltage18V
Current1.3–2.2 A
Power25–44 W
Pin ø3.0 mm

Flame-detection pins for Thermo 90 and AT2000ST — monitored ignition, not just heating.

← Swipe the table to view all specs →
OE Part No.ApplicationOur ModelVAWPin ø
252069011300Eberspächer Airtronic D2/D4/D4S 12VRZ08-4588–964–724.5
252070011100Eberspächer Airtronic D2/D4/D4S 24VRZ18-45184.8–5.588–984.5
252106011000Eberspächer Hydronic D4WSC/D5WSC 12VRZ08-45-188–964–724.5
84906BWebasto Air Top 2000 12VRZ08-4285.2–6.942–554.2
9005086AWebasto Air Top 2000 ST 12VRZ08-42-185.2–6.942–554.2
91370BWebasto 3500/5000 heater 12VRZ08-42-485.2–6.942–554.2
82307BWebasto Air Top 2000 24VRZ18-42183.5–4.063–724.2
9005087AWebasto Air Top 2000 ST 24VRZ18-42-1183.0–3.654–654.2
9005931BWebasto Thermo 90 ST 24VRZ18-42-2183.0–3.654–654.5
82410BWebasto Thermo 90 24VRZ18-42-3183.0–3.654–654.5
91371BWebasto 3500/5000 heater 24VRZ18-42-4183.0–3.654–654.2
82306BWebasto Air Top 2000 flame detector 24VRZ18-30181.3–2.225–443.0
82407BWebasto Thermo 90 flame detector 24VRZ18-30-1181.3–2.225–443.0
9010617AWebasto Thermo 90 ST 24VRZ18-30-2181.3–2.225–443.0
Can't find your number? Send us the OE number, heater model or a photo of your old plug — we confirm the match with a dimensional sheet before you order.
DG series liquid heating element

DG Series · Liquid Heating Elements

Instant / storage water heaters · steam generators
Voltage220V 50/60Hz
Power1,000–3,000 W
Surface loadup to 78 W/cm²
Life5,000 h

Hot-pressed Si₃N₄ blade for water and liquid heating: instant water heaters, boiling taps, steam machines. Surface load up to 78 W/cm²; dry-fire safe to 1,300°C. Standard JB/T 10320-2002.

Request datasheet →
DK series dry heating element

DK Series · Dry Heating Elements

Mold heating · packaging · ignition systems
Sizes95–191 mm
Power400–900 W
Voltage110V / 220V
Dry-point1,000–1,200°C

Fast-response dry-heating blades for industrial equipment, gas appliance ignition and high-temperature tooling. Anti-acid/alkali corrosion; strict no-quench operating rule applies.

Request datasheet →
DK series heating element with terminal block

Custom Heating Blades

Ceramic welding heads · PV cutting · laser systems
FormatCustom drawing
Loadup to 25 W/cm²
Strength≥900 MPa
HardnessHRA 92–94

Same hot-pressed Si₃N₄ platform, shaped to your geometry: ceramic welding heads, solar wafer cutters, automated laser equipment, petrochemical ignition.

Request datasheet →
custom glow plug with harness

Custom Voltage & Wattage

From 25 W flame-detector pins to 108 W high-power ignition pins — engineered to your control unit's drive curve.

Voltage8–24V DC
Power25–108 W
MOQ500 pcs
Samples7–10 days
Start a project →
custom pin and harness glow plug

Custom Geometry & Harness

Pin diameter, length, thread, connector type and harness length matched to your heater head — just send a drawing or a sample.

Pin ø3.0 / 4.2 / 4.5 mm+
TerminalsCrimp / seal / OEM
ToolingFree ≥ 5K pcs
Lead time15–25 days
Start a project →
private label glow plug

Private Label & Neutral Packing

Your logo laser-marked on the hex, your box, your barcode. Invisible supply chain, visible brand.

MarkingLaser / pad print
PackingCustom retail / OEM
DocsCoC per lot
NDAStandard
Start a project →
Hot-Pressed Si₃N₄ — Material Properties (measured)
≥900 MPaRoom-Temp Flexural Strength
6.0–8.0Fracture Toughness MPa·m^½
23–25 W/(m·K)Thermal Conductivity
HRA 92–94Hardness · 3.2–3.4 g/cm³ Density
Built Different

Six Reasons Importers Keep Reordering

01

3–5 Second Pre-Heat

Reaches 1,000°C in seconds — less battery drain, faster cabin heat, noticeably better user experience.

02

Reliable at −40°C

Consistent ignition in arctic conditions where metal plugs struggle — a key selling point for Nordic and Russian markets.

03

5,000-Hour Life, 10⁵ Cycles

Rated for 5,000 operating hours and 100,000 on-off cycles — far beyond metal sheathed plugs.

04

Acid & Alkali Proof

Si₃N₄ body resists combustion residues and corrosive environments — verified in boiling 5% H₂SO₄ and 30% NaOH tests.

05

100% End-of-Line Tested

Every pin is powered and current-profiled before packing; hipot 2,500 V / 50 Hz for 1 min with no breakdown.

06

One-Roof Supply Chain

Powder to packed pin in our own plant — quality, cost and lead time under one roof, not split across traders.

Manufacturing Muscle

Inside the Plant — Real Photos, Real Machines

Hangzhou Jianzhan Trading Co., Ltd. — a professional manufacturer of hot-pressed silicon nitride ceramic products, supported by the Ningbo Institute of Materials Technology (CAS) and SICCAS. ISO 9001:2015 certified.

On Site
Hot-press sintering shop & vacuum furnace line
On Site
Inside the sintering furnace · EOL testing · finished-goods warehouse
Glow plug assembly line
Hangzhou Jianzhan — glow plug assembly line
Hot-press sintering shop
Hot-press sintering shop
Hot-pressing equipment row
Hot-pressing equipment row
End-of-line electrical testing
End-of-line electrical testing
materials laboratory
Materials laboratory
spectrum analysis
Spectrum analysis
Vacuum sintering furnace
Vacuum sintering furnace
Heater head bench test
Heater head bench test
01
Powder Prep

High-purity Si₃N₄ powder batching & milling with full traceability.

02
Hot-Press Sintering

Proprietary hot-pressing recipe for full density and toughness.

03
Precision Grinding

Pin diameter and thread machined to drawing tolerance.

04
Assembly & Sealing

Heater embed, harness crimp, terminal seal and marking.

05
EOL Testing

100% power-on current profile + hipot before packing.

Trust, Verified

Every Shipment Leaves With Data Behind It

Our lab runs the tests your quality team would run — and we hand you the results. Per-lot test reports ship with every order.

Current & Temperature Curves

Signature curves recorded on every design, checked against the RZ reference curves — your ECU sees exactly the load it expects.

Dielectric Strength 2,500 V

Room-temperature 2,500 V / 50 Hz applied for 1 minute — no breakdown. Leakage ≤0.025 mA in normal operation.

Thermal Shock & Aging

Repeated heat-up / cool-down cycling and high-temperature burn-in — validated for the 10⁵ on-off duty cycle.

Dimensional & Thread Gauging

Pin diameter (4.2 / 4.5 / 3.0 mm), thread and harness length checked with go/no-go gauges, lot by lot.

Batch traceability: every box carries a lot number tied to powder batch, sintering run and test records. If a claim ever happens, we trace it to the exact furnace — and we share that file with you under NDA.
Partnership Program

From Your Drawing to a Production Line in 30 Days

We act as the invisible ignition partner behind brands in Europe, CIS and North America. Bring us an OE number, a sample, or a heater model — our engineers handle the rest.

  • Reverse-engineering with full dimensional & electrical report
  • Free samples for standard RZ series; tooling refunded on volume orders
  • NDA-friendly — your designs stay inside your supply chain
  • Dedicated engineer, English / German / Russian support
  • Annual capacity reservation for stable pricing
1
Inquiry & Spec Alignment

Share the OE number, heater model, voltage and annual volume.

Day 1
2
Engineering Review

Match confirmation, DFM feedback and quotation within 24 h.

Day 2–3
3
Samples & Validation

Pre-production samples with test reports; bench test at your side.

Day 7–14
4
First Article Approval

Dimensional sheet + electrical curves for your quality gate.

Day 15–20
5
Mass Production & Shipment

15–25 day lead time, neutral or branded packing, sea or air.

Day 21–30
Packaging & Logistics

Packaging & Shipping

Zero-breakage logistics for fragile ceramics — engineered for sea, air and cargo truck delivery.

Shockproof Foam-Lined Mailer

Shockproof Foam-Lined Mailer

Each plug sealed in a foam-cushioned bubble mailer — impact-proof, moisture-proof.

Batch-Sealed & Export-Ready

Batch-Sealed & Export-Ready

Stacked, boxed and palletized for sea, air and cargo-truck delivery.

Shipping Specs

  • Individual EVA cavity per plug
  • Bubble wrap + foam separators
  • Drop-tested: 0% transit breakage
  • OEM neutral or branded boxes
Buyer Voices

Trusted by Distributors Across Europe & CIS

★★★★★

We switched our Airtronic line to RZ08-45 two years ago. Pre-heat is visibly faster than the metal plugs we sold before, and warranty returns almost disappeared. The per-lot test reports make our technical audits painless.

MK
Marcin K.Aftermarket Distributor · Poland
★★★★★

As a fleet parts importer, consistency is everything. Resistance and current stay within spec batch after batch — my garage customers stopped complaining about cold-start failures in winter.

DS
Dmitri S.Fleet Parts Importer · Belarus
★★★★★

They rebuilt a discontinued Webasto pin for us in three weeks — drawing, samples, test curves. We've since moved three heater models onto their platform. Communication is fast and straight to the point.

HB
Hans B.OEM Sourcing · Germany
Before You Ask

Frequently Asked Questions

Yes. The RZ series covers Airtronic D2/D4/D4S, Hydronic D4WSC/D5WSC, Air Top 2000/2000 ST, Thermo 90/90 ST and Webasto 3500/5000 platforms — see the OE cross-reference table above. Send us your OE number or a photo of the old plug and we confirm the match with a dimensional sheet before you order.

Standard RZ series: 100–500 pcs per model, mixed models allowed in one shipment. Custom projects: 1,000 pcs per part number after sample approval. Trial orders are accepted for new partners evaluating quality.

Standard series samples ship in 3–5 days via DHL/FedEx. Custom samples take 7–14 days. First sample sets for verified B2B buyers are free — you only cover express freight.

12 months from shipment. Claims are answered within 48 hours with photo and lot-number analysis; confirmed claims are credited or replaced in the next order. Lot traceability goes back to the powder batch.

Yes — laser marking on the hex, custom boxes, barcodes and multilingual manuals are routine. Packaging tooling is free on orders above 5,000 pcs per model.

FOB / CIF (major EU ports), payment by T/T (30% deposit, 70% against B/L) — direct bank transfer in USD / EUR / RMB with a formal foreign-trade contract. Alibaba Trade Assurance orders are welcome for first-time buyers.

Via trusted cargo lines (road / air) to Moscow, with onward delivery across Russia and CIS via local carriers (CDEK, Delovye Linii).

Let's Talk Numbers

Get Your Quotation Within 24 Hours

Tell us the OE number, heater model and volume. An engineer — not a sales bot — replies with pricing, lead time and test data.

Hangzhou Jianzhan Trading Co., Ltd.
1F, Building 2, No.18 Gaoxiang Road, Pukou St.,
Shengzhou, Zhejiang, China
+86 186 6808 0563
WhatsApp / WeChat · Ms. Lily Shang
info@jianzhantrade.com
Replies within 12 hours on working days
Working hours: Mon–Sat, 8:30–18:00 (GMT+8)
ISO 9001:2015 certified factory · SGS / TÜV test reports on request

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* Wholesale only (MOQ: 50 pcs). Free test samples available for verified workshops.
Protected under NDA on request. Average first reply time: 6.5 hours.

Inquiry received.

Thank you — our engineer will reply within 24 hours. For urgent needs, message us directly on WhatsApp.