Skip to product information
SKU:
NLT1Q00715
Ships for free in 2–4 business days.
Carburetor Assembly for 2004–2005 Honda TRX450R – Replaces 16100-HP1-673
$83.99
In Stock
$83.99
Sale price
$83.99
Regular price
New aftermarket carburetor assembly for 2004–2005 Honda TRX450R models; replaces 16100-HP1-673 when the QA16A-style configuration matches.
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
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
- 2004 Honda TRX450R
- 2005 Honda TRX450R
Product Overview
A first-generation TRX450R that is difficult to start, hangs at idle, bogs on acceleration, or leaks fuel may need carburetor replacement after valve clearance, compression, spark, intake sealing, and fuel flow are verified. This is the complete assembly for the listed model years.
The 2004–2005 carburetor differs from later TRX450R/TRX450ER applications. Match the OEM number, throttle-position provisions, cables, intake dimensions, and connections.
Key Features & Performance
- Dedicated to 2004–2005 TRX450R applications
- Cross-reference for Honda 16100-HP1-673
- Complete carburetor rather than a jet-only kit
- Restores metering when the original body or circuits are damaged
Replaces Part Numbers
- 16100-HP1-673
Common Uses
- Repairing fuel leakage from the original carburetor
- Correcting bogging after engine and intake checks
- Replacing a worn or incomplete carburetor assembly
Technical Specifications
- Product Type: ATV carburetor assembly
- Vehicle: Honda TRX450R
- Model Years: 2004–2005
- Condition: New
- Replacement Type: Aftermarket
Installation & Fitment
- Confirm 16100-HP1-673 and compare the removed carburetor
- Inspect intake boots and clamps for air leaks
- Transfer cables and electrical pieces without forcing them
- Set idle and mixture to the Honda service procedure, then leak-check
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Production date, engine type, transmission, trim, serial number, and previous repairs can change fitment. Compare the original part, mounting points, dimensions, connections, and listed reference numbers before purchase.
Frequently Asked Questions
Q: Will this fit a 2006 TRX450R? A: No. This listing is for the 2004–2005 carburetor configuration.
Q: Is 16100-HP1-673 a model number? A: No. It is the carburetor assembly reference.
Q: Can tight valves make a TRX450R hard to start? A: Yes. Check valve clearance and compression before assuming the carburetor is at fault.
Q: Does this replace a jet kit? A: No. This is a complete carburetor assembly; tuning may still be required for modifications.
Part Summary
keywords: 2004 TRX450R carburetor, 2005 TRX450R carburetor, 16100-HP1-673 replacement, Honda 450R carb assembly, TRX450R hard start repair
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.