

THE CATALOGUE IS HUGE. THE RIGHT PAGE NEVER RANKS.
Marketing for parts sellers who live or die on fitment
Year, make, model and engine code decide whether a sale happens. We build the visibility, the catalogue pages and the campaigns around that reality — not around generic keywords.
Tell us a little about your brand and we'll be in touch within 24 hours to lock in a time.

forecast US aftermarket size in 2026, up 5.4%
projected US aftermarket sales by 2029
online parts sales against about $414B light-duty
average documented online cart abandonment rate
We made the difference for those brands

Who we are
A partner who knows a wrong-fit return costs you twice
Web Tonic is a digital marketing agency running catalogue-scale accounts every day, with one senior team handling search visibility, paid media, feeds, content and the sites that carry them. Parts and accessory sellers get their own plan because the buying journey is unusual: a shopper who already knows the part, a fitment question that must be answered exactly, and a return policy that punishes every guess.
Sound familiar?
If you sell parts, two of these will sound familiar.
A hundred thousand SKUs and only the category pages get traffic. Paid campaigns advertise items that are out of stock or wrong for the vehicle a shopper is driving. Marketplaces take the easy sales and keep the customer relationship. None of that is a demand problem — the demand is enormous. It is a data, visibility and merchandising problem.
Category pages rank while the individual part pages that convert best are invisible.
Returns quietly erase the margin, because the page never made fitment unambiguous.
Marketplace revenue looks healthy while your own store stays a rounding error.
Results & timeline
Your first seven days with us.
Day 1–2: Audit
We audit the operation the way a shopper hits it: what a part-number or vehicle-specific query returns, which templates are indexable and which collapse into duplicates, how the feed describes fitment, what the out-of-stock behaviour does to rankings and ad spend, and whether revenue can be attributed by SKU at all.
Day 3–4: Data and tracking
Then the unglamorous part: cleaning the feed so vehicle data, part numbers, interchange references and attributes are consistent, and rebuilding measurement so margin, returns and repeat purchases are visible instead of gross revenue alone. Hedges & Company’s 2026 interview with the Auto Care Association puts online parts sales near $44 billion against about $414 billion in light-duty sales, so the online share is still being decided.
Day 5–6: Build and launch
Templates that answer fitment on the page, category and vehicle pages with real substance, feed-driven campaigns segmented by margin and stock, and the highest-volume part families prioritised first.
Day 7: Review and plan
You get the first written review: what launched, what the early numbers say, contribution after returns, and the 30-day plan by part family rather than by channel.
for WHO
Built for catalogues, not for single-product stores
Selling parts online is a data discipline wearing a marketing costume. A shopper arrives already knowing what they need, or knowing the vehicle and hoping you can tell them. Get that answer right on the page and the sale is easy; get it wrong and you pay twice, once in shipping and once in a return that also costs the relationship.
The market rewards getting it right. the Auto Care Association’s 2026 forecast reports the US total aftermarket growing 3.9% in 2025, with 5.4% growth forecast for 2026 to reach $599.7 billion and $676.5 billion projected by 2029. Online is the fastest-moving slice: Hedges & Company’s 2026 interview with the Auto Care Association puts online parts sales at roughly $44 billion against about $414 billion of light-duty sales, close to a tenth of the market and compounding at about 6.7% a year.
That is why our work starts in the feed and the templates rather than in a campaign dashboard, and why every number we report is net of returns. Four things run under one roof: organic visibility at catalogue scale, paid search and shopping campaigns, paid social and video for the accessory and enthusiast side, and store templates built to convert. Outcomes sit on our case studies.
Results
Real Spend. Real Revenue.

What we run for parts and accessory sellers.
Rank the page a shopper actually needs.
At catalogue scale, visibility is a template problem rather than a copywriting one. Vehicle and part-family pages need unique substance, canonical rules have to stop thousands of near-identical variants competing with each other, and internal linking has to make deep pages reachable. Crawl budget is finite, so the structure decides which of your hundred thousand pages ever gets seen.
Then the page has to answer the question in the shopper's head: does this fit my vehicle, what does it replace, what is in the box, how long until it arrives. Pages that answer fitment explicitly earn the sale and prevent the return, which is why we treat content and returns as the same project.
Feed-driven campaigns that respect margin and stock.
We run shopping and search campaigns off a clean feed, segmented by margin, stock position and part family, so budget stops flowing to lines you cannot ship or cannot profit on. Vehicle-specific and part-number queries get their own treatment, and accessory demand is worked differently from replacement demand because the buyer is different.
Success is contribution after returns and discounts, by part family. A campaign that wins on revenue while quietly raising the return rate gets rebuilt, not celebrated.
Own the relationship the marketplaces rent to you.
Marketplaces are a legitimate channel and a bad landlord: they take the easy volume and keep the buyer. So we build the direct side deliberately — own-store visibility, email and lifecycle programmes tied to service intervals, and content that gives an enthusiast or installer a reason to come back to you rather than to a search box.
Both channels get reported side by side, net of fees and returns, so the mix is a decision rather than a habit.
Services

Paid media across Google search, shopping, remarketing and short video, run from a clean feed and segmented by margin, stock and part family. Vehicle-specific and part-number queries are structured separately from broad category demand, and budget follows contribution rather than clicks.
Enthusiast and accessory demand is worked through video and social, where the buying decision is inspiration-led rather than replacement-led. A campaign that wins on revenue while raising the return rate is a losing campaign, so every report is net of returns and we say plainly which lines we would stop advertising.
Content and creative at catalogue scale: vehicle and part-family pages with real substance, installation and compatibility explanations, comparison content for interchangeable options, and short video that shows the part in the hand and on the vehicle. Written to prevent returns as much as to earn rankings, because on parts those are the same job.
Data intelligence: feed hygiene, revenue and margin by SKU and part family, return rates joined to the pages and campaigns that produced them, and marketplace performance reported net of fees beside your own store. Cart abandonment is treated as a measurable line rather than a fact of life — Baymard Institute’s documented abandonment research puts the documented average near 70%, and shipping surprises and fitment doubt are the two biggest fixable causes.
The same reporting answers merchandising questions: which part families deserve more depth, which lines are quietly unprofitable after returns, and where stock decisions are throttling demand you already paid for.
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Built on trust. Proven by results.
We partner with SMBs and Fortune 500 companies to deliver more than reach — we bring clarity, execution, and measurable outcomes. Every successful partnership starts with a strong culture fit and a shared drive to grow.








faq
Answered questions.
Both, and often with the same programme running on two fronts. Retailers and distributors come to us for catalogue visibility, feed-driven campaigns and direct-store growth alongside their marketplace revenue. Manufacturers and suppliers come to us for demand that pulls their line through the channel, plus the data quality that makes their products findable wherever they are sold.
We also hold market exclusivity: one company per category and market, written into the agreement.
Most sellers arrive at one of two moments: marketplace fees eating the margin and a decision to build the direct side properly, or a replatform where the old visibility disappeared with the old URLs. Both need the same foundation — clean vehicle data, templates that answer fitment, and reporting net of returns.
Feed and campaign fixes usually show inside the first weeks, because the demand is already there and the waste is immediate. Template and fitment improvements typically move conversion and returns within 30 to 60 days. Organic visibility at catalogue scale compounds over two to three quarters, since it depends on structure and indexation rather than on publishing volume.
We report contribution after returns from the first month, which sometimes makes early numbers look less flattering than a gross revenue chart would. That is deliberate.
A fixed monthly fee, quoted separately from ad spend, scoped to catalogue size and the channels you need. After the audit you get a plan tied to targets — contribution after returns first — and we will tell you which channels we would not run yet rather than selling the full bundle on day one.
Yes, and it is usually where the fastest money is. We work with standard industry vehicle and product data structures as well as the messy exports most catalogues actually run on, and we fix consistency at the source rather than patching it per channel. That means part numbers, interchange references, attributes, images and vehicle applications made coherent, then pushed to your store, shopping campaigns and marketplaces from one clean version. Where fitment data genuinely does not exist for a line, we say so and design the page to ask the right question instead of guessing on the shopper's behalf.
Not a problem, but a dependency worth balancing. Marketplaces deliver volume you would struggle to replace and keep the buyer relationship, the pricing pressure and the fees. The healthy pattern we see is deliberate: keep the marketplace volume, and build the direct channel where margin, repeat purchase and lifecycle messaging are yours to keep. We report both side by side net of fees and returns so the mix is a decision you make each quarter rather than a habit you inherited.
The starting point. Generic ecommerce playbooks assume a few hundred products, a single buyer type and no compatibility constraint — none of which is true here. We start in the feed and the template, treat fitment as a revenue lever, judge every line on contribution after returns, and prioritise part families by demand and margin instead of optimising whatever the dashboard sorted to the top.
You get a named senior strategist rather than a coordinator relaying questions, with the search, paid, feed and web specialists on one team. Most sellers arrive from two or three vendors who each optimise their own report; one team means one set of numbers and one weekly review. If the fix is smaller than a full retainer, we scope to the fix and say so on the first call.
The strategies that hold up in this sector are unglamorous: accurate vehicle data, one honest page per part family, stock respected in every campaign, and a quarterly look at the lines that lose money after returns. That is the work.































