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SKU:
NLT2E01177
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Coolant Temperature Sender for Volvo Penta 3.0 4.3 5.0 5.7 Replaces 3850397
$22.99
In Stock
$22.99
Sale price
$22.99
Regular price
This aftermarket coolant temperature sender replaces Volvo Penta 3850397 for compatible 3.0L, 4.3L, 5.0L, and 5.7L marine engines.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Volvo Penta 3.0L marine engine applications
- Volvo Penta 4.3L marine engine applications
- Volvo Penta 5.0L marine engine applications
- Volvo Penta 5.7L marine engine applications
- OMC and MerCruiser applications using the same 805218T-style sender and connector
Product Overview
A temperature gauge stuck cold, pegged hot as soon as the key turns, or reading erratically may have a failed sender or wiring fault. Confirm actual coolant temperature before trusting the dash.
For the repair to hold up, the part still has to match the original application. This sender changes resistance with engine coolant temperature and feeds the instrument gauge. It is not necessarily the separate switch used by an alarm circuit.
Key Features & Performance
- Threaded coolant-temperature sensing tip
- Single-circuit gauge-sender function
- Marine engine replacement application
- Corrosion-resistant metal body
Replaces Part Numbers
- 3850397
- REC3850397
- 805218T
- 18-7600
- 75-03752
- 15326386
Common Uses
- Replacing a confirmed failed or damaged marine coolant temperature sender
- Correcting the symptoms described in the product overview after testing related parts
- Restoring dependable operation during repair or scheduled service
- Matching one of the listed reference numbers or compatible applications
Technical Specifications
- Product Type: Coolant temperature sender
- Compatible Engine Sizes: 3.0L / 4.3L / 5.0L / 5.7L
- Primary Part Number: 3850397
- Replacement Type: Aftermarket
Installation & Fitment
- Work only after the engine cools
- Disconnect the battery and relieve cooling-system pressure
- Match thread, terminal, and gauge resistance application
- Check for leaks and compare gauge reading with actual temperature
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model names alone do not guarantee fitment. Production dates, serial-number breaks, engine packages, wiring, and installed options can change the part used on otherwise similar equipment.
Frequently Asked Questions
Q: What problem is this part commonly used to address? A: A temperature gauge stuck cold, pegged hot as soon as the key turns, or reading erratically may have a failed sender or wiring fault. Confirm actual coolant temperature before trusting the dash.
Q: How should fitment be confirmed? A: Match the original part number first, then compare the connector or fittings, mounting points, dimensions, and machine or engine serial information.
Q: Is this an original equipment manufacturer part? A: No. This is an aftermarket replacement part for compatible applications.
Q: Can another fault cause similar symptoms? A: Yes. Wiring, grounds, hoses, filters, related controls, and mechanical wear should be tested as part of the diagnosis.
Q: What should be checked after installation? A: Confirm secure connections, normal operation, and no leaks, heat, binding, or warning indications before returning the equipment to service.
Part Summary
keywords: Volvo Penta 3850397 temp sender, 4.3 marine temperature gauge repair, 5.7 coolant sensor replacement, 805218T sender fit, boat engine overheating gauge part, aftermarket marine sender
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.