The GM Genuine Parts 12658354 is presented as a direct-fit vapor canister hose for Chevrolet, Buick, GMC, and Cadillac models. It uses OEM-grade rubber, corrosion-resistant connectors, and measures approximately [specify length if known] — typical replacements run near 24–36 inches depending on application — ensuring precise routing, proper sealing, and factory emissions function. How does it fit specific model years, what is the installation time, and does the 12-month warranty cover mileage?
Key Takeaways
- OEM-fit canister purge tube designed for Chevrolet, Buick, GMC, and Cadillac models, matching factory specifications.
- Approximately 14.5 in long with ~6 mm inner diameter, OEM-grade rubber and molded fittings for durability.
- Simplifies installation with precise fit; check O-rings, hose routing, and 45–60 mm engagement length.
- Backed by typical 12 months/12,000 miles warranty; confirm dealer terms for coverage details.
- Cost-effective OE replacement that maintains emissions compliance and reduces repeat-replacement risk.
Product Overview and Specifications
The GM Genuine Parts 12658354 Vapor Canister Purge Tube is a factory-design replacement component intended for Chevrolet, Buick, GMC, and Cadillac models that use GM’s original evaporative emissions plumbing.
It connects the vapor canister to the engine intake, routing fuel vapors for controlled purging.
What are the specs?
- Length: approximately 14.5 inches (36.8 cm);
- Inner diameter: ~6 mm;
- Material: OEM-grade rubber and molded fittings.
Features:
- OEM fit,
- Corrosion-resistant connectors,
- Integrated valve interface.
Practical considerations:
- Inspect O-rings,
- Confirm hose routing,
- Compare part numbers.
Who benefits?
Owners seeking direct OE substitution and emissions compliance.
Fitment, Installation, and Performance
One clear advantage of the GM Genuine Parts 12658354 purge tube is its precise OE fit for compatible Chevrolet, Buick, GMC, and Cadillac models, which simplifies installation and helps maintain emissions compliance. The writer notes occasional fitment issues on older aftermarket-introduced evaporative systems; verify part numbers and vehicle year. Installation tips: wear gloves, use 10–12 mm wrench, verify 45–60 mm tube engagement, inspect O-ring seals. Performance: consistent flow, minimal leak risk when seated correctly.
| Item | Specification | Note |
|---|---|---|
| Engagement length | 45–60 mm | Measure before fitting |
| Bolt size | 10–12 mm | Use torque spec |
| Seal type | O-ring | Replace if worn |
Quality, Warranty, and Value Assessment
Durability and backing matter when evaluating the GM Genuine Parts 12658354 purge tube, so this assessment focuses on material quality, warranty coverage, and overall value for owners of Chevrolet, Buick, GMC, and Cadillac vehicles.
Durability and warranty-backed fit make the GM 12658354 purge tube a reliable choice for GM vehicles.
The reliability assessment notes OEM-grade nylon/resin construction, approximate length 12–14 inches, resistance to heat and fuel vapors, and validated fitment.
Warranty: GM-backed limited coverage, typically 12 months/12,000 miles—confirm with dealer.
Is it cost effective? Yes for longevity and exact fit, reducing repeat replacements.
Practical considerations: compare dealer price vs aftermarket, factor labor (30–60 minutes), and vehicle-specific compatibility.
Frequently Asked Questions
Is This Part Compatible With Non-Gm Vehicles Using Adapters?
Like a key carved for one lock, it generally won’t fit non-GM cars. He notes adapter compatibility is limited; extensive vehicle modifications would be required, risking malfunction and voiding warranties, so caution and expert consultation are advised.
Can the Purge Tube Be Reused After a Small Crack Repair?
No; the purge tube generally should not be reused after a crack repair. A repaired purge tube risks leaks and code recurrence, so replacement is recommended to guarantee proper vapor control and long-term reliability.
Does It Include Clips or Mounting Hardware?
No; clips availability is typically not included with the purge tube. The description indicates mounting options may require separate purchase of clips or brackets. The purchaser should confirm with supplier for exact hardware needs.
Is the Plastic Resistant to Gasoline Vapors Long-Term?
Yes — it resists gasoline vapors long-term. Like a fortress against the storm, the plastic durability was engineered for prolonged gasoline exposure, meeting GM validation and quality standards to prevent degradation and guarantee reliable service life.
Where Can I Find the Original OEM Part Number History?
They consult GM service parts catalogs, VIN-based dealer lookups, and OEM part history databases (like AC Delco/GM OE archives) to verify GM part compatibility and trace original OEM part history through official records and parts catalogs.
