Thermostat 3076489 – OEM Replacement for Cummins Diesel Engines

(Intro paragraph – brief, keyword-rich)

This Thermostat 3076489 is a direct OEM-equivalent cooling system component designed specifically for Cummins heavy-duty engines. Precision-engineered to regulate engine temperature within optimal range, this part ensures reliable performance, reduced thermal stress, and extended service life in on-highway trucks, construction equipment, and industrial power units.

H2: Product Specifications – Thermostat 3076489

(Use a table or bullet list – here shown as clear text hierarchy)

H3: General Information

• Part Number: 3076489

• Type: Wax-pellet thermostat

• Application: Engine cooling system – primary thermostat

• OEM Cross-Reference: Cummins 3076489, Fleetguard® equivalent

• Packaging: Individually boxed with sealing ring

H3: Physical Dimensions

• Flange Diameter: 54 mm (2.13 in)

• Overall Height: 62 mm (2.44 in)

• Valve Lift: 8.5 mm at full open

• Mounting Hole Centers: 66 mm (2.60 in) – bolt-on flange type

H3: Thermal Performance

• Initial Opening Temperature: 82°C (179.6°F)

• Full Open Temperature: 95°C (203°F)

• Max Operating Pressure: 150 kPa (21.7 psi)

• Hysteresis: ≤ 2.5°C for stable cycling

H3: Material & Durability

• Body: Corrosion-resistant brass/stainless steel composite

• Wax Element: High-stability synthetic wax blend

• Spring: Zinc-plated steel with anti-fatigue design

• Seal: Viton® O-ring included – resistant to coolant additives

H2: Compatible Cummins Engine Models

This 3076489 thermostat fits the following engine families (OEM application guide):

• ISX Series – ISX15, ISX12 (model years 2010–2018)

• ISM Series – ISM11 (all ratings)

• QSX Series – QSX15 (industrial and marine)

• M11 – select mechanical and electronic versions

• L10 – limited compatibility – please verify housing type

Always confirm with your engine serial number (ESN) before installation.

H2: Why Choose This Thermostat 3076489?

• Direct bolt-on fit – no adapter or modification required.

• OEM-spec wax element ensures accurate temperature regulation, reducing fuel consumption and emissions.

• Tested for 1,000+ thermal cycles to meet Cummins durability standards.

• Includes new mounting gasket – no extra parts to order.

H2: Installation & Maintenance Tips

1. Drain coolant to below thermostat housing level.

2. Remove housing bolts and carefully extract old thermostat.

3. Clean mating surfaces – do not use sealant on gasket.

4. Install new 3076489 with spring side facing engine block.

5. Torque housing bolts to 25 N·m (18.5 lb·ft) – cross-pattern.

6. Refill with Cummins-approved coolant and bleed air from system.

After installation, run engine to operating temperature and check for leaks. Re-torque after first heat cycle if recommended by your shop manual.

H2: Frequently Asked Questions (FAQ)

Q: Is this a genuine Cummins part?
A: This is an OEM-equivalent aftermarket part manufactured to original specifications. For genuine Cummins-branded packaging, please contact our sales team.

Q: What is the warranty period?
A: 12 months or 100,000 miles against manufacturing defects – whichever comes first.

Q: Can I use this thermostat in a marine application?
A: Yes, for QSX marine engines with fresh-water cooling systems. Not recommended for raw-water (seawater) cooled units.

H2: Related Parts & Accessories

(Internal links – shown as text suggestions – you will hyperlink these to your internal product pages)

• Thermostat Housing Gasket – compatible with 3076489 (link to product page)

• Coolant Temperature Sensor – for ISX/ISM engines (link to sensor page)

• Water Pump Assembly – heavy-duty replacement for Cummins (link to pump page)

• Radiator Cap – 90 kPa pressure rating (link to cap page)

• Complete Thermostat Kit – includes housing + gasket + thermostat (link to kit page)

H2: Shipping, Returns & Support

• In-stock: Yes – ready for same-day dispatch (orders before 2 PM EST).

• Returns: 30-day hassle-free return policy – unused and in original packaging.

• Technical Support: Contact our diesel parts specialists via the live chat or email support@yourcompany.com – please provide your ESN for accurate fitment verification.

•